./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa --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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:18:08,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:18:08,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:18:08,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:18:08,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:18:08,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:18:08,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:18:08,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:18:08,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:18:08,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:18:08,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:18:08,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:18:08,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:18:08,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:18:08,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:18:08,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:18:08,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:18:08,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:18:08,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:18:08,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:18:08,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:18:08,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:18:08,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:18:08,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:18:08,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:18:08,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:18:08,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:18:08,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:18:08,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:18:08,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:18:08,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:18:08,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:18:08,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:18:08,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:18:08,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:18:08,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:18:08,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:18:08,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:18:08,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:18:08,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:18:08,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:18:08,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:18:08,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:18:08,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:18:08,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:18:08,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:18:08,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:18:08,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:18:08,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:18:08,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:18:08,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:18:08,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:18:08,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:18:08,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:18:08,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:18:08,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:18:08,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:18:08,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:18:08,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:18:08,724 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-12-06 23:18:08,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:18:08,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:18:08,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:18:08,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:18:08,904 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:18:08,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-12-06 23:18:08,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/fef461dfa/0d6ea0ebe4b24ea6a271314569e0931b/FLAG2501da3e4 [2021-12-06 23:18:09,397 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:18:09,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-12-06 23:18:09,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/fef461dfa/0d6ea0ebe4b24ea6a271314569e0931b/FLAG2501da3e4 [2021-12-06 23:18:09,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/fef461dfa/0d6ea0ebe4b24ea6a271314569e0931b [2021-12-06 23:18:09,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:18:09,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:18:09,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:18:09,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:18:09,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:18:09,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:18:09" (1/1) ... [2021-12-06 23:18:09,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542fb967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:09, skipping insertion in model container [2021-12-06 23:18:09,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:18:09" (1/1) ... [2021-12-06 23:18:09,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:18:09,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:18:10,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:18:10,208 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) [2021-12-06 23:18:10,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18cba7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:10, skipping insertion in model container [2021-12-06 23:18:10,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:18:10,209 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 23:18:10,210 INFO L158 Benchmark]: Toolchain (without parser) took 274.30ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 59.8MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 23:18:10,211 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:18:10,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.34ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 59.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 23:18:10,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.34ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 59.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa --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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:18:11,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:18:11,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:18:11,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:18:11,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:18:11,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:18:11,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:18:11,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:18:11,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:18:11,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:18:11,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:18:11,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:18:11,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:18:11,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:18:11,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:18:11,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:18:11,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:18:11,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:18:11,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:18:11,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:18:11,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:18:11,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:18:11,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:18:11,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:18:11,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:18:11,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:18:11,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:18:11,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:18:11,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:18:11,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:18:11,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:18:11,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:18:11,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:18:11,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:18:11,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:18:11,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:18:11,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:18:11,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:18:11,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:18:11,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:18:11,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:18:11,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 23:18:11,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:18:11,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:18:11,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:18:11,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:18:11,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:18:11,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:18:11,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:18:11,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:18:11,686 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:18:11,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:18:11,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:18:11,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:18:11,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:18:11,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:18:11,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:18:11,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:18:11,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:18:11,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:18:11,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:18:11,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:18:11,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:18:11,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:18:11,690 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-12-06 23:18:11,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:18:11,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:18:11,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:18:11,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:18:11,942 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:18:11,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-12-06 23:18:11,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/7116d72e6/4cd75c75c6ec48cf84172dfc248cd186/FLAG96cca941d [2021-12-06 23:18:12,408 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:18:12,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-12-06 23:18:12,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/7116d72e6/4cd75c75c6ec48cf84172dfc248cd186/FLAG96cca941d [2021-12-06 23:18:12,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/data/7116d72e6/4cd75c75c6ec48cf84172dfc248cd186 [2021-12-06 23:18:12,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:18:12,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:18:12,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:18:12,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:18:12,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:18:12,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509c2f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12, skipping insertion in model container [2021-12-06 23:18:12,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:18:12,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:18:12,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:18:12,786 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:18:12,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:18:12,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:18:12,834 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:18:12,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:18:12,904 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:18:12,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12 WrapperNode [2021-12-06 23:18:12,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:18:12,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:18:12,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:18:12,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:18:12,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,946 INFO L137 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 61 [2021-12-06 23:18:12,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:18:12,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:18:12,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:18:12,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:18:12,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:18:12,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:18:12,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:18:12,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:18:12,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (1/1) ... [2021-12-06 23:18:12,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:18:12,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:12,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:18:12,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:18:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:18:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:18:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:18:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:18:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:18:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:18:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:18:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:18:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:18:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:18:13,099 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:18:13,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:18:13,246 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:18:13,250 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:18:13,250 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:18:13,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:18:13 BoogieIcfgContainer [2021-12-06 23:18:13,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:18:13,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:18:13,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:18:13,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:18:13,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:18:12" (1/3) ... [2021-12-06 23:18:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7136c758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:18:13, skipping insertion in model container [2021-12-06 23:18:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:18:12" (2/3) ... [2021-12-06 23:18:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7136c758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:18:13, skipping insertion in model container [2021-12-06 23:18:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:18:13" (3/3) ... [2021-12-06 23:18:13,257 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2021-12-06 23:18:13,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:18:13,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-12-06 23:18:13,292 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:18:13,297 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 [2021-12-06 23:18:13,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-12-06 23:18:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-12-06 23:18:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:18:13,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:13,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:13,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2021-12-06 23:18:13,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:13,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967391903] [2021-12-06 23:18:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:13,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:13,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:13,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:18:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:18:13,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:13,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:13,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967391903] [2021-12-06 23:18:13,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967391903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:13,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:13,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:13,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050909053] [2021-12-06 23:18:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:13,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:13,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:13,505 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-12-06 23:18:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:13,565 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-12-06 23:18:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:13,568 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 [2021-12-06 23:18:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:13,574 INFO L225 Difference]: With dead ends: 80 [2021-12-06 23:18:13,574 INFO L226 Difference]: Without dead ends: 76 [2021-12-06 23:18:13,576 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 [2021-12-06 23:18:13,579 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 215 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 [2021-12-06 23:18:13,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 215 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-06 23:18:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2021-12-06 23:18:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-12-06 23:18:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-12-06 23:18:13,610 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2021-12-06 23:18:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:13,610 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-12-06 23:18:13,610 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) [2021-12-06 23:18:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-12-06 23:18:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:18:13,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:13,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:13,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:13,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:13,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2021-12-06 23:18:13,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:13,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930744084] [2021-12-06 23:18:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:13,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:13,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:13,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:18:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:13,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:18:13,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:13,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:13,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:13,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930744084] [2021-12-06 23:18:13,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930744084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:13,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:13,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:13,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378711964] [2021-12-06 23:18:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:13,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:13,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:13,988 INFO L87 Difference]: Start difference. First operand 45 states and 49 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) [2021-12-06 23:18:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:14,013 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-12-06 23:18:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:14,014 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 [2021-12-06 23:18:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:14,014 INFO L225 Difference]: With dead ends: 44 [2021-12-06 23:18:14,014 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 23:18:14,015 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 [2021-12-06 23:18:14,016 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 119 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 [2021-12-06 23:18:14,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 119 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 23:18:14,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-06 23:18:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) 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) [2021-12-06 23:18:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-12-06 23:18:14,023 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2021-12-06 23:18:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:14,024 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-12-06 23:18:14,024 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) [2021-12-06 23:18:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-12-06 23:18:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:18:14,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:14,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:14,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:14,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:14,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2021-12-06 23:18:14,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:14,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407377090] [2021-12-06 23:18:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:14,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:14,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:14,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:18:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:18:14,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:14,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:14,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407377090] [2021-12-06 23:18:14,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407377090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:14,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:14,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:18:14,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4338775] [2021-12-06 23:18:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:14,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:18:14,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:18:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:18:14,487 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-12-06 23:18:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:14,560 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-12-06 23:18:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:18:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-12-06 23:18:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:14,561 INFO L225 Difference]: With dead ends: 60 [2021-12-06 23:18:14,561 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 23:18:14,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:14,562 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:14,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 64 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 23:18:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2021-12-06 23:18:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 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) [2021-12-06 23:18:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-12-06 23:18:14,568 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2021-12-06 23:18:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:14,568 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-12-06 23:18:14,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-12-06 23:18:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-12-06 23:18:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:18:14,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:14,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:14,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:14,771 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2021-12-06 23:18:14,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:14,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668981140] [2021-12-06 23:18:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:14,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:14,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:14,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:14,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:18:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:14,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:18:14,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:15,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:15,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668981140] [2021-12-06 23:18:15,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668981140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:15,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:18:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466467977] [2021-12-06 23:18:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:15,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:18:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:18:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:18:15,045 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-12-06 23:18:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:15,139 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-12-06 23:18:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:18:15,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-12-06 23:18:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:15,141 INFO L225 Difference]: With dead ends: 80 [2021-12-06 23:18:15,141 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 23:18:15,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:15,143 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:15,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 126 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 23:18:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2021-12-06 23:18:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 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) [2021-12-06 23:18:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-12-06 23:18:15,153 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2021-12-06 23:18:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:15,153 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-12-06 23:18:15,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-12-06 23:18:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-12-06 23:18:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:18:15,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:15,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:15,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:18:15,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:15,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2021-12-06 23:18:15,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:15,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82652077] [2021-12-06 23:18:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:15,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:15,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:15,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:18:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:15,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:18:15,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:15,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:15,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82652077] [2021-12-06 23:18:15,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82652077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:15,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:15,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:15,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045727371] [2021-12-06 23:18:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:15,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:15,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:15,429 INFO L87 Difference]: Start difference. First operand 67 states and 87 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) [2021-12-06 23:18:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:15,452 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2021-12-06 23:18:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:15,453 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 [2021-12-06 23:18:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:15,455 INFO L225 Difference]: With dead ends: 73 [2021-12-06 23:18:15,455 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 23:18:15,455 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 [2021-12-06 23:18:15,456 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 151 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 [2021-12-06 23:18:15,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 151 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 23:18:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2021-12-06 23:18:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 65 states have internal predecessors, (86), 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) [2021-12-06 23:18:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2021-12-06 23:18:15,464 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2021-12-06 23:18:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:15,464 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2021-12-06 23:18:15,465 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) [2021-12-06 23:18:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2021-12-06 23:18:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:18:15,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:15,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:15,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:18:15,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:15,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2021-12-06 23:18:15,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:15,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567978693] [2021-12-06 23:18:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:15,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:15,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:15,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:18:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:15,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:18:15,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:15,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:15,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:15,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567978693] [2021-12-06 23:18:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567978693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:15,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:15,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722578083] [2021-12-06 23:18:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:15,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:18:15,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:18:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:18:15,834 INFO L87 Difference]: Start difference. First operand 69 states and 89 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) [2021-12-06 23:18:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:15,897 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2021-12-06 23:18:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:18:15,897 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 [2021-12-06 23:18:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:15,898 INFO L225 Difference]: With dead ends: 81 [2021-12-06 23:18:15,898 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 23:18:15,898 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 [2021-12-06 23:18:15,899 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 97 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:15,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 137 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 23:18:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-12-06 23:18:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 65 states have internal predecessors, (85), 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) [2021-12-06 23:18:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2021-12-06 23:18:15,904 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2021-12-06 23:18:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:15,904 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2021-12-06 23:18:15,904 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) [2021-12-06 23:18:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2021-12-06 23:18:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:18:15,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:15,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:15,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:18:16,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1183253904, now seen corresponding path program 1 times [2021-12-06 23:18:16,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178198510] [2021-12-06 23:18:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:16,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:16,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:16,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:18:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:18:16,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:16,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:16,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178198510] [2021-12-06 23:18:16,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178198510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:16,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:16,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537486264] [2021-12-06 23:18:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:16,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:16,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:16,210 INFO L87 Difference]: Start difference. First operand 69 states and 88 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) [2021-12-06 23:18:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:16,227 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-12-06 23:18:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:16,228 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 [2021-12-06 23:18:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:16,228 INFO L225 Difference]: With dead ends: 52 [2021-12-06 23:18:16,228 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 23:18:16,229 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 [2021-12-06 23:18:16,229 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 162 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 [2021-12-06 23:18:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 162 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:16,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 23:18:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-12-06 23:18:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.457142857142857) internal successors, (51), 45 states have internal predecessors, (51), 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) [2021-12-06 23:18:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-12-06 23:18:16,233 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2021-12-06 23:18:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:16,233 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-12-06 23:18:16,233 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) [2021-12-06 23:18:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-12-06 23:18:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:18:16,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:16,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:16,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:18:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2021-12-06 23:18:16,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:16,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478490784] [2021-12-06 23:18:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:16,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:16,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:16,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:18:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:16,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:18:16,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:16,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:18:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:16,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:16,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:16,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478490784] [2021-12-06 23:18:16,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478490784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:16,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:16,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:16,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960786101] [2021-12-06 23:18:16,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:16,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:16,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:16,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:16,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:16,617 INFO L87 Difference]: Start difference. First operand 49 states and 54 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) [2021-12-06 23:18:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:16,687 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-12-06 23:18:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:16,687 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 [2021-12-06 23:18:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:16,688 INFO L225 Difference]: With dead ends: 61 [2021-12-06 23:18:16,688 INFO L226 Difference]: Without dead ends: 61 [2021-12-06 23:18:16,688 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 [2021-12-06 23:18:16,689 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 23 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:16,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 131 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-06 23:18:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2021-12-06 23:18:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 44 states have internal predecessors, (50), 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) [2021-12-06 23:18:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-06 23:18:16,692 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2021-12-06 23:18:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:16,693 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-06 23:18:16,693 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) [2021-12-06 23:18:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-06 23:18:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:18:16,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:16,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:16,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:18:16,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2021-12-06 23:18:16,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:16,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374423557] [2021-12-06 23:18:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:16,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:16,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:16,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:16,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:18:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:16,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:18:16,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:19,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:19,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:18:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:19,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:19,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:19,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374423557] [2021-12-06 23:18:19,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374423557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:19,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:19,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:19,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716932478] [2021-12-06 23:18:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:19,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:18:19,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:18:19,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2021-12-06 23:18:19,146 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-06 23:18:19,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:19,306 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-12-06 23:18:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:18:19,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2021-12-06 23:18:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:19,307 INFO L225 Difference]: With dead ends: 63 [2021-12-06 23:18:19,308 INFO L226 Difference]: Without dead ends: 63 [2021-12-06 23:18:19,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2021-12-06 23:18:19,309 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:19,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 155 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2021-12-06 23:18:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-06 23:18:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2021-12-06 23:18:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.4) internal successors, (49), 43 states have internal predecessors, (49), 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) [2021-12-06 23:18:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-12-06 23:18:19,312 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 14 [2021-12-06 23:18:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:19,312 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-12-06 23:18:19,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-06 23:18:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-12-06 23:18:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:18:19,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:19,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:19,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 23:18:19,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:19,515 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571318, now seen corresponding path program 1 times [2021-12-06 23:18:19,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:19,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262694786] [2021-12-06 23:18:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:19,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:19,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:19,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:19,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:18:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:18:19,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:19,677 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 23:18:19,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-12-06 23:18:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:19,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:19,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:19,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262694786] [2021-12-06 23:18:19,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262694786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:19,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:19,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:19,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222716786] [2021-12-06 23:18:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:19,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:18:19,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:18:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:18:19,726 INFO L87 Difference]: Start difference. First operand 47 states and 52 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) [2021-12-06 23:18:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:19,838 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-12-06 23:18:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:18:19,839 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 [2021-12-06 23:18:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:19,839 INFO L225 Difference]: With dead ends: 59 [2021-12-06 23:18:19,839 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 23:18:19,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:18:19,840 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 30 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:19,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 143 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-06 23:18:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 23:18:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2021-12-06 23:18:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 42 states have internal predecessors, (48), 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) [2021-12-06 23:18:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-12-06 23:18:19,844 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-12-06 23:18:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:19,844 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-12-06 23:18:19,844 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) [2021-12-06 23:18:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-12-06 23:18:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:18:19,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:19,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:19,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:18:20,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,045 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2021-12-06 23:18:20,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:20,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692023754] [2021-12-06 23:18:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:20,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:20,047 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:20,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:18:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:20,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:18:20,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:20,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:20,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692023754] [2021-12-06 23:18:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692023754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:20,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:20,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:18:20,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792541343] [2021-12-06 23:18:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:20,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:18:20,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:18:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:18:20,104 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2021-12-06 23:18:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:20,144 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-12-06 23:18:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:18:20,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2021-12-06 23:18:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:20,145 INFO L225 Difference]: With dead ends: 48 [2021-12-06 23:18:20,145 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 23:18:20,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:18:20,146 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:20,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 23:18:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-06 23:18:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-12-06 23:18:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-12-06 23:18:20,148 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 14 [2021-12-06 23:18:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-12-06 23:18:20,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2021-12-06 23:18:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-12-06 23:18:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:18:20,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:20,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:20,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 23:18:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,350 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2021-12-06 23:18:20,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:20,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625270945] [2021-12-06 23:18:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:20,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:20,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:20,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:18:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:20,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:18:20,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:20,530 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 23:18:20,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-12-06 23:18:20,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-06 23:18:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:20,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:20,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625270945] [2021-12-06 23:18:20,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625270945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:20,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:20,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:20,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830453521] [2021-12-06 23:18:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:20,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:18:20,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:18:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:18:20,687 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 7 states, 6 states have (on average 2.5) 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) [2021-12-06 23:18:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:20,751 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-12-06 23:18:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:18:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) 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 [2021-12-06 23:18:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:20,752 INFO L225 Difference]: With dead ends: 53 [2021-12-06 23:18:20,752 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 23:18:20,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:18:20,753 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:20,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 95 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2021-12-06 23:18:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 23:18:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2021-12-06 23:18:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-12-06 23:18:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-12-06 23:18:20,755 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2021-12-06 23:18:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:20,755 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-12-06 23:18:20,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) 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) [2021-12-06 23:18:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-12-06 23:18:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:18:20,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:20,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:20,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:18:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash 406071094, now seen corresponding path program 1 times [2021-12-06 23:18:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427731675] [2021-12-06 23:18:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:20,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:20,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:20,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:18:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:21,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:18:21,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:23,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:23,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:18:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:23,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:23,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427731675] [2021-12-06 23:18:23,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427731675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:23,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:23,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:23,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848041314] [2021-12-06 23:18:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:23,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:18:23,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:18:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-12-06 23:18:23,279 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 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) [2021-12-06 23:18:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:23,355 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-12-06 23:18:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:18:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 [2021-12-06 23:18:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:23,355 INFO L225 Difference]: With dead ends: 36 [2021-12-06 23:18:23,356 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 23:18:23,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2021-12-06 23:18:23,356 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:23,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 89 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-06 23:18:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 23:18:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-06 23:18:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.3333333333333333) 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) [2021-12-06 23:18:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-12-06 23:18:23,358 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2021-12-06 23:18:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:23,358 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-12-06 23:18:23,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2021-12-06 23:18:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-12-06 23:18:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:18:23,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:23,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:23,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:23,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:23,560 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 406070677, now seen corresponding path program 1 times [2021-12-06 23:18:23,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310853799] [2021-12-06 23:18:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:23,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:23,563 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:18:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:23,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:18:23,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:23,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:23,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:23,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310853799] [2021-12-06 23:18:23,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310853799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:23,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:18:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239720070] [2021-12-06 23:18:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:23,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:23,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:23,671 INFO L87 Difference]: Start difference. First operand 36 states and 38 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) [2021-12-06 23:18:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:23,692 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-12-06 23:18:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:18:23,693 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 [2021-12-06 23:18:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:23,693 INFO L225 Difference]: With dead ends: 42 [2021-12-06 23:18:23,693 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 23:18:23,693 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 [2021-12-06 23:18:23,694 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 126 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 [2021-12-06 23:18:23,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 126 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 23:18:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-12-06 23:18:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 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) [2021-12-06 23:18:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-12-06 23:18:23,696 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2021-12-06 23:18:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:23,696 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-12-06 23:18:23,696 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) [2021-12-06 23:18:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-12-06 23:18:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:18:23,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:23,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:23,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:18:23,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:23,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 861631573, now seen corresponding path program 1 times [2021-12-06 23:18:23,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537873623] [2021-12-06 23:18:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:23,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:23,903 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:23,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:18:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:23,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:18:23,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:24,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:24,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:24,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537873623] [2021-12-06 23:18:24,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537873623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:24,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:24,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:24,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944338871] [2021-12-06 23:18:24,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:24,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:18:24,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:18:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:18:24,076 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.2) 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) [2021-12-06 23:18:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:24,155 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-12-06 23:18:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:18:24,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) 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 [2021-12-06 23:18:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:24,156 INFO L225 Difference]: With dead ends: 41 [2021-12-06 23:18:24,156 INFO L226 Difference]: Without dead ends: 41 [2021-12-06 23:18:24,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:18:24,156 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 83 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:24,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 67 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-06 23:18:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-12-06 23:18:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 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) [2021-12-06 23:18:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-12-06 23:18:24,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 18 [2021-12-06 23:18:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:24,158 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-12-06 23:18:24,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) 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) [2021-12-06 23:18:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-12-06 23:18:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:18:24,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:24,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:24,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:18:24,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:24,360 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash 861631572, now seen corresponding path program 1 times [2021-12-06 23:18:24,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:24,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969238133] [2021-12-06 23:18:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:24,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:24,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:24,362 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:24,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:18:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:24,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:18:24,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:24,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:24,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:24,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969238133] [2021-12-06 23:18:24,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969238133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:24,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:24,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:24,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938508836] [2021-12-06 23:18:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:24,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:18:24,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:18:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:18:24,451 INFO L87 Difference]: Start difference. First operand 37 states and 39 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) [2021-12-06 23:18:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:24,515 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-12-06 23:18:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:18:24,515 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 [2021-12-06 23:18:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:24,516 INFO L225 Difference]: With dead ends: 37 [2021-12-06 23:18:24,516 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 23:18:24,516 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 [2021-12-06 23:18:24,517 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:24,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 49 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 23:18:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-12-06 23:18:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) 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) [2021-12-06 23:18:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-12-06 23:18:24,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2021-12-06 23:18:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-12-06 23:18:24,519 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) [2021-12-06 23:18:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-12-06 23:18:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 23:18:24,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:24,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:24,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 23:18:24,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:24,721 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash -607702474, now seen corresponding path program 1 times [2021-12-06 23:18:24,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:24,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184599074] [2021-12-06 23:18:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:24,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:24,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:18:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:24,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:18:24,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:27,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:27,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:27,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184599074] [2021-12-06 23:18:27,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184599074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:27,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:27,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:18:27,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847654722] [2021-12-06 23:18:27,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:27,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:18:27,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:27,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:18:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2021-12-06 23:18:27,044 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2021-12-06 23:18:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:27,062 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-12-06 23:18:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:18:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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 [2021-12-06 23:18:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:27,063 INFO L225 Difference]: With dead ends: 39 [2021-12-06 23:18:27,063 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 23:18:27,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2021-12-06 23:18:27,064 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:27,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2021-12-06 23:18:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 23:18:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 23:18:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 28 states have internal predecessors, (29), 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) [2021-12-06 23:18:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-12-06 23:18:27,065 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2021-12-06 23:18:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:27,066 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-12-06 23:18:27,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2021-12-06 23:18:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-12-06 23:18:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 23:18:27,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:27,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:27,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:18:27,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:27,268 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 940774974, now seen corresponding path program 1 times [2021-12-06 23:18:27,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:27,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994815789] [2021-12-06 23:18:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:27,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:27,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:27,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:18:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:27,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:18:27,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:27,465 INFO L388 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 [2021-12-06 23:18:27,493 INFO L388 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 [2021-12-06 23:18:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:27,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:27,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994815789] [2021-12-06 23:18:27,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994815789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:27,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:27,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:18:27,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178514212] [2021-12-06 23:18:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:27,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:18:27,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:18:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:18:27,504 INFO L87 Difference]: Start difference. First operand 31 states and 31 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) [2021-12-06 23:18:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:27,658 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-12-06 23:18:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:18:27,659 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 [2021-12-06 23:18:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:27,659 INFO L225 Difference]: With dead ends: 33 [2021-12-06 23:18:27,659 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 23:18:27,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:18:27,660 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:27,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 94 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 23:18:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-12-06 23:18:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 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) [2021-12-06 23:18:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-12-06 23:18:27,663 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 19 [2021-12-06 23:18:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:27,663 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-12-06 23:18:27,663 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) [2021-12-06 23:18:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-12-06 23:18:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:18:27,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:27,664 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] [2021-12-06 23:18:27,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 23:18:27,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:27,865 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash -900345610, now seen corresponding path program 1 times [2021-12-06 23:18:27,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:27,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708227903] [2021-12-06 23:18:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:27,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:27,870 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:27,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:18:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:27,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:18:27,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:28,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:28,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708227903] [2021-12-06 23:18:28,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708227903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:28,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:28,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:18:28,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042946612] [2021-12-06 23:18:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:28,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:18:28,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:18:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:18:28,008 INFO L87 Difference]: Start difference. First operand 30 states and 30 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) [2021-12-06 23:18:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:28,017 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-12-06 23:18:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:18:28,018 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 [2021-12-06 23:18:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:28,018 INFO L225 Difference]: With dead ends: 29 [2021-12-06 23:18:28,018 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 23:18:28,018 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 [2021-12-06 23:18:28,019 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 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 [2021-12-06 23:18:28,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:18:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 23:18:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 23:18:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 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) [2021-12-06 23:18:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-12-06 23:18:28,020 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 20 [2021-12-06 23:18:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:28,020 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-12-06 23:18:28,020 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) [2021-12-06 23:18:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-12-06 23:18:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:18:28,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:28,021 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] [2021-12-06 23:18:28,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:28,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:28,222 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -900746796, now seen corresponding path program 1 times [2021-12-06 23:18:28,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:28,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884920582] [2021-12-06 23:18:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:28,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:28,228 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:28,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:18:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:28,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:18:28,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:28,453 INFO L388 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 [2021-12-06 23:18:28,509 INFO L388 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 [2021-12-06 23:18:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:28,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:28,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:28,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884920582] [2021-12-06 23:18:28,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884920582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:28,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:28,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:18:28,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793734285] [2021-12-06 23:18:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:28,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:18:28,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:18:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:18:28,537 INFO L87 Difference]: Start difference. First operand 29 states and 28 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) [2021-12-06 23:18:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:28,760 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-12-06 23:18:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:18:28,760 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 [2021-12-06 23:18:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:28,761 INFO L225 Difference]: With dead ends: 28 [2021-12-06 23:18:28,761 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 23:18:28,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:18:28,761 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:28,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 72 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 23:18:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 23:18:28,763 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) [2021-12-06 23:18:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-12-06 23:18:28,763 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 20 [2021-12-06 23:18:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:28,763 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-12-06 23:18:28,763 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) [2021-12-06 23:18:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-12-06 23:18:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:18:28,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:28,764 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] [2021-12-06 23:18:28,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:18:28,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:28,965 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2141620480, now seen corresponding path program 1 times [2021-12-06 23:18:28,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:28,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328383497] [2021-12-06 23:18:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:28,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:28,970 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:28,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:18:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:29,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:18:29,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:29,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:18:29,138 INFO L388 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 [2021-12-06 23:18:29,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 23:18:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:29,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:29,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328383497] [2021-12-06 23:18:29,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328383497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:29,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:29,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:18:29,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134043628] [2021-12-06 23:18:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:29,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:18:29,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:18:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:18:29,182 INFO L87 Difference]: Start difference. First operand 28 states and 27 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) [2021-12-06 23:18:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:29,323 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-12-06 23:18:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:18:29,324 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 [2021-12-06 23:18:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:29,324 INFO L225 Difference]: With dead ends: 27 [2021-12-06 23:18:29,324 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 23:18:29,324 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 [2021-12-06 23:18:29,325 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:29,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 72 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:18:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 23:18:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 23:18:29,326 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) [2021-12-06 23:18:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-12-06 23:18:29,326 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 21 [2021-12-06 23:18:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:29,326 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-12-06 23:18:29,326 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) [2021-12-06 23:18:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-12-06 23:18:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:18:29,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:29,327 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] [2021-12-06 23:18:29,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 23:18:29,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:29,528 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 807949254, now seen corresponding path program 1 times [2021-12-06 23:18:29,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:29,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352027059] [2021-12-06 23:18:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:29,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:29,533 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:29,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:18:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 23:18:29,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:29,690 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 23:18:29,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-12-06 23:18:29,841 INFO L388 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 [2021-12-06 23:18:29,910 INFO L388 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 16 treesize of output 8 [2021-12-06 23:18:29,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-06 23:18:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:29,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:29,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352027059] [2021-12-06 23:18:29,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352027059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:29,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:29,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:18:29,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893225164] [2021-12-06 23:18:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:29,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:18:29,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:18:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:18:29,955 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-06 23:18:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:30,104 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-12-06 23:18:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:18:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 23 [2021-12-06 23:18:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:30,105 INFO L225 Difference]: With dead ends: 26 [2021-12-06 23:18:30,105 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 23:18:30,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:18:30,106 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:30,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 66 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-06 23:18:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 23:18:30,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 23:18:30,107 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) [2021-12-06 23:18:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-12-06 23:18:30,107 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2021-12-06 23:18:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:30,107 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-12-06 23:18:30,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-06 23:18:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-12-06 23:18:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 23:18:30,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:30,108 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] [2021-12-06 23:18:30,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 23:18:30,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:30,309 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-12-06 23:18:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -949846393, now seen corresponding path program 1 times [2021-12-06 23:18:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:18:30,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625511800] [2021-12-06 23:18:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:30,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:18:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:18:30,315 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:18:30,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 23:18:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:18:30,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:30,525 INFO L388 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 [2021-12-06 23:18:30,591 INFO L388 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 37 treesize of output 25 [2021-12-06 23:18:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:30,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:18:30,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:18:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625511800] [2021-12-06 23:18:30,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625511800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:18:30,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:18:30,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:18:30,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532796481] [2021-12-06 23:18:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:18:30,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:18:30,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:18:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:18:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:18:30,674 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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) [2021-12-06 23:18:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:30,685 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-12-06 23:18:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:18:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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 [2021-12-06 23:18:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:30,686 INFO L225 Difference]: With dead ends: 25 [2021-12-06 23:18:30,686 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 23:18:30,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:18:30,687 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:30,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2021-12-06 23:18:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 23:18:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 23:18:30,687 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) [2021-12-06 23:18:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:18:30,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-12-06 23:18:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:30,688 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:18:30,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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) [2021-12-06 23:18:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:18:30,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 23:18:30,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (12 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (11 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (7 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (6 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (5 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2021-12-06 23:18:30,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION (2 of 13 remaining) [2021-12-06 23:18:30,691 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION (1 of 13 remaining) [2021-12-06 23:18:30,691 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2021-12-06 23:18:30,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:30,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:18:30,900 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:30,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:18:30,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:18:30 BoogieIcfgContainer [2021-12-06 23:18:30,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:18:30,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:18:30,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:18:30,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:18:30,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:18:13" (3/4) ... [2021-12-06 23:18:30,922 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:18:30,932 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-06 23:18:30,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-06 23:18:30,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 23:18:30,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:18:30,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:18:30,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:18:30,970 INFO L158 Benchmark]: Toolchain (without parser) took 18535.37ms. Allocated memory was 56.6MB in the beginning and 92.3MB in the end (delta: 35.7MB). Free memory was 33.7MB in the beginning and 72.2MB in the end (delta: -38.5MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,970 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:18:30,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.57ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 33.3MB in the beginning and 39.8MB in the end (delta: -6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.76ms. Allocated memory is still 75.5MB. Free memory was 39.8MB in the beginning and 57.0MB in the end (delta: -17.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,971 INFO L158 Benchmark]: Boogie Preprocessor took 20.68ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,972 INFO L158 Benchmark]: RCFGBuilder took 283.52ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 43.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,972 INFO L158 Benchmark]: TraceAbstraction took 17658.93ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 27.4MB in the end (delta: 14.9MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,972 INFO L158 Benchmark]: Witness Printer took 56.58ms. Allocated memory is still 92.3MB. Free memory was 27.4MB in the beginning and 72.2MB in the end (delta: -44.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-06 23:18:30,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.57ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 33.3MB in the beginning and 39.8MB in the end (delta: -6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.76ms. Allocated memory is still 75.5MB. Free memory was 39.8MB in the beginning and 57.0MB in the end (delta: -17.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.68ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.52ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 43.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17658.93ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 27.4MB in the end (delta: 14.9MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Witness Printer took 56.58ms. Allocated memory is still 92.3MB. Free memory was 27.4MB in the beginning and 72.2MB in the end (delta: -44.7MB). Peak memory consumption was 4.4MB. 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: 789]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 791]: 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, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 17.6s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 779 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 776 mSDsluCounter, 2512 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 184 IncrementalHoareTripleChecker+Unchecked, 1767 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 853 IncrementalHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 745 mSDtfsCounter, 853 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 150, 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, 23 MinimizatonAttempts, 146 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 353 ConstructedInterpolants, 58 QuantifiedInterpolants, 3557 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1476 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 23:18:31,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f2d25a-34e5-4500-bb38-7ddce9cd604e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE