./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.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_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/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_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/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_1997e7a1-9899-4206-9721-72e3351e6166/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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:22:11,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:22:11,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:22:11,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:22:11,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:22:11,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:22:11,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:22:11,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:22:11,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:22:11,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:22:11,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:22:11,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:22:11,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:22:11,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:22:11,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:22:11,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:22:11,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:22:11,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:22:11,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:22:11,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:22:11,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:22:11,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:22:11,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:22:11,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:22:11,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:22:11,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:22:11,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:22:11,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:22:11,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:22:11,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:22:11,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:22:11,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:22:11,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:22:11,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:22:11,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:22:11,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:22:11,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:22:11,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:22:11,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:22:11,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:22:11,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:22:11,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:22:11,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:22:11,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:22:11,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:22:11,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:22:11,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:22:11,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:22:11,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:22:11,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:22:11,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:22:11,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:22:11,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:22:11,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:22:11,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:22:11,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:22:11,755 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_1997e7a1-9899-4206-9721-72e3351e6166/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-12-06 18:22:11,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:22:11,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:22:11,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:22:11,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:22:11,958 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:22:11,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-12-06 18:22:12,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/908237487/aea219167e454ba691b9277d8cde8cb6/FLAG3307b7131 [2021-12-06 18:22:12,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:22:12,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-12-06 18:22:12,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/908237487/aea219167e454ba691b9277d8cde8cb6/FLAG3307b7131 [2021-12-06 18:22:12,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/908237487/aea219167e454ba691b9277d8cde8cb6 [2021-12-06 18:22:12,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:22:12,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:22:12,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:12,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:22:12,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:22:12,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:12" (1/1) ... [2021-12-06 18:22:12,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55379f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:12, skipping insertion in model container [2021-12-06 18:22:12,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:12" (1/1) ... [2021-12-06 18:22:12,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:22:12,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:22:12,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:12,876 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 18:22:12,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b86bd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:12, skipping insertion in model container [2021-12-06 18:22:12,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:12,877 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 18:22:12,879 INFO L158 Benchmark]: Toolchain (without parser) took 392.55ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 44.4MB in the beginning and 70.8MB in the end (delta: -26.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-06 18:22:12,879 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 62.6MB in the beginning and 62.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:12,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.44ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 44.2MB in the beginning and 70.8MB in the end (delta: -26.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-06 18:22:12,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 62.6MB in the beginning and 62.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.44ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 44.2MB in the beginning and 70.8MB in the end (delta: -26.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/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_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/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_1997e7a1-9899-4206-9721-72e3351e6166/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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:22:14,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:22:14,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:22:14,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:22:14,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:22:14,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:22:14,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:22:14,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:22:14,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:22:14,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:22:14,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:22:14,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:22:14,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:22:14,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:22:14,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:22:14,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:22:14,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:22:14,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:22:14,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:22:14,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:22:14,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:22:14,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:22:14,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:22:14,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:22:14,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:22:14,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:22:14,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:22:14,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:22:14,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:22:14,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:22:14,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:22:14,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:22:14,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:22:14,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:22:14,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:22:14,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:22:14,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:22:14,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:22:14,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:22:14,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:22:14,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:22:14,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 18:22:14,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:22:14,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:22:14,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:22:14,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:22:14,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:22:14,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:22:14,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:22:14,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:22:14,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:22:14,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:22:14,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:22:14,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:22:14,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:22:14,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:22:14,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:22:14,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:22:14,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:22:14,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:22:14,324 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:22:14,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:14,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:22:14,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:22:14,324 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_1997e7a1-9899-4206-9721-72e3351e6166/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-12-06 18:22:14,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:22:14,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:22:14,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:22:14,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:22:14,576 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:22:14,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-12-06 18:22:14,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/a01d20be4/99503c3ca0a44228a3ae4fdd501335bd/FLAG76a7b7c66 [2021-12-06 18:22:15,045 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:22:15,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-12-06 18:22:15,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/a01d20be4/99503c3ca0a44228a3ae4fdd501335bd/FLAG76a7b7c66 [2021-12-06 18:22:15,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/data/a01d20be4/99503c3ca0a44228a3ae4fdd501335bd [2021-12-06 18:22:15,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:22:15,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:22:15,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:15,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:22:15,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:22:15,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c917ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15, skipping insertion in model container [2021-12-06 18:22:15,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:22:15,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:22:15,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:15,457 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 18:22:15,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:22:15,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:15,523 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:22:15,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:15,612 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:22:15,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15 WrapperNode [2021-12-06 18:22:15,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:15,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:22:15,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:22:15,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:22:15,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,662 INFO L137 Inliner]: procedures = 176, calls = 103, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 170 [2021-12-06 18:22:15,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:22:15,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:22:15,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:22:15,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:22:15,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:22:15,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:22:15,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:22:15,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:22:15,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (1/1) ... [2021-12-06 18:22:15,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:22:15,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:15,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:22:15,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 18:22:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 18:22:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:22:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:22:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 18:22:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 18:22:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:22:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:22:15,843 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:22:15,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:22:16,198 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:22:16,205 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:22:16,205 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:22:16,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:22:16 BoogieIcfgContainer [2021-12-06 18:22:16,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:22:16,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:22:16,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:22:16,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:22:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:22:15" (1/3) ... [2021-12-06 18:22:16,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d76b82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:22:16, skipping insertion in model container [2021-12-06 18:22:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:15" (2/3) ... [2021-12-06 18:22:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d76b82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:22:16, skipping insertion in model container [2021-12-06 18:22:16,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:22:16" (3/3) ... [2021-12-06 18:22:16,214 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-1.i [2021-12-06 18:22:16,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:22:16,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-12-06 18:22:16,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:22:16,256 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 18:22:16,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-12-06 18:22:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 18:22:16,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:16,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:16,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:16,282 INFO L85 PathProgramCache]: Analyzing trace with hash -599633160, now seen corresponding path program 1 times [2021-12-06 18:22:16,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:16,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346145582] [2021-12-06 18:22:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:16,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:16,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:16,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:16,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:22:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:16,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:22:16,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:16,440 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 18:22:16,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:16,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346145582] [2021-12-06 18:22:16,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346145582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:16,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:16,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:16,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635500460] [2021-12-06 18:22:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:22:16,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:22:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:22:16,475 INFO L87 Difference]: Start difference. First operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:22:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:16,564 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-12-06 18:22:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:22:16,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-06 18:22:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:16,574 INFO L225 Difference]: With dead ends: 129 [2021-12-06 18:22:16,574 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 18:22:16,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:16,580 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 128 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:16,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 515 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 18:22:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-12-06 18:22:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.8055555555555556) internal successors, (130), 121 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-12-06 18:22:16,618 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 11 [2021-12-06 18:22:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:16,619 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-12-06 18:22:16,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:22:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-12-06 18:22:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 18:22:16,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:16,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:16,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:16,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:16,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 518474697, now seen corresponding path program 1 times [2021-12-06 18:22:16,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:16,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672633440] [2021-12-06 18:22:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:16,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:16,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:16,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:16,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:22:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:16,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:22:16,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:16,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:16,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:16,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672633440] [2021-12-06 18:22:16,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672633440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:16,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:16,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:16,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308436463] [2021-12-06 18:22:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:16,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:22:16,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:22:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:22:16,993 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:22:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:17,091 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2021-12-06 18:22:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:22:17,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-06 18:22:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:17,094 INFO L225 Difference]: With dead ends: 127 [2021-12-06 18:22:17,094 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 18:22:17,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:17,096 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 123 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:17,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 474 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:22:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 18:22:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-12-06 18:22:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.7916666666666667) internal successors, (129), 121 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-12-06 18:22:17,109 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 17 [2021-12-06 18:22:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:17,109 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-12-06 18:22:17,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:22:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-12-06 18:22:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:22:17,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:17,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:17,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:22:17,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:17,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash -222458304, now seen corresponding path program 1 times [2021-12-06 18:22:17,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:17,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88253564] [2021-12-06 18:22:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:17,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:17,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:17,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:22:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:17,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:22:17,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:17,502 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 18:22:17,643 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:17,644 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 26 treesize of output 33 [2021-12-06 18:22:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:17,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:19,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:19,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88253564] [2021-12-06 18:22:19,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88253564] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:19,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:19,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-12-06 18:22:19,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787489344] [2021-12-06 18:22:19,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:19,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:22:19,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:22:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:22:19,924 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:20,289 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2021-12-06 18:22:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:22:20,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-12-06 18:22:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:20,291 INFO L225 Difference]: With dead ends: 161 [2021-12-06 18:22:20,291 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 18:22:20,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:22:20,292 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 77 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:20,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 582 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2021-12-06 18:22:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 18:22:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2021-12-06 18:22:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.75) internal successors, (154), 134 states have internal predecessors, (154), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2021-12-06 18:22:20,301 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 22 [2021-12-06 18:22:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:20,301 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2021-12-06 18:22:20,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2021-12-06 18:22:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:22:20,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:20,302 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:20,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:20,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:20,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -222458303, now seen corresponding path program 1 times [2021-12-06 18:22:20,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:20,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389835662] [2021-12-06 18:22:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:20,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:20,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:20,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:22:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:20,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:22:20,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:20,642 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 18:22:20,648 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 18:22:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:20,827 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 18:22:20,835 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 18:22:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:20,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:25,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:25,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389835662] [2021-12-06 18:22:25,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389835662] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:25,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375763389] [2021-12-06 18:22:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:25,070 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:25,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 18:22:25,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 18:22:25,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-12-06 18:22:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:25,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:22:25,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:25,186 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 18:22:25,191 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 18:22:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:25,324 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 18:22:25,332 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:25,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 18:22:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:25,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:25,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375763389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:25,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:25,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 18:22:25,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523140251] [2021-12-06 18:22:25,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:25,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:22:25,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:22:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=85, Unknown=2, NotChecked=0, Total=110 [2021-12-06 18:22:25,552 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:26,116 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2021-12-06 18:22:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-12-06 18:22:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:26,118 INFO L225 Difference]: With dead ends: 180 [2021-12-06 18:22:26,118 INFO L226 Difference]: Without dead ends: 180 [2021-12-06 18:22:26,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=31, Invalid=123, Unknown=2, NotChecked=0, Total=156 [2021-12-06 18:22:26,119 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 161 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:26,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 464 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 351 Invalid, 0 Unknown, 72 Unchecked, 0.5s Time] [2021-12-06 18:22:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-06 18:22:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2021-12-06 18:22:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.6862745098039216) internal successors, (172), 145 states have internal predecessors, (172), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2021-12-06 18:22:26,127 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 22 [2021-12-06 18:22:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:26,127 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2021-12-06 18:22:26,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2021-12-06 18:22:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:22:26,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:26,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:26,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-12-06 18:22:26,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:26,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:26,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:26,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:26,532 INFO L85 PathProgramCache]: Analyzing trace with hash -126280059, now seen corresponding path program 1 times [2021-12-06 18:22:26,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:26,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093876711] [2021-12-06 18:22:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:26,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:26,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:26,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:26,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:22:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:22:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:26,620 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 18:22:26,644 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 13 treesize of output 9 [2021-12-06 18:22:26,671 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 27 treesize of output 15 [2021-12-06 18:22:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:26,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:26,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:26,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093876711] [2021-12-06 18:22:26,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093876711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:26,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:26,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:26,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454391701] [2021-12-06 18:22:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:26,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:22:26,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:22:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:26,684 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:27,088 INFO L93 Difference]: Finished difference Result 151 states and 179 transitions. [2021-12-06 18:22:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:22:27,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-12-06 18:22:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:27,090 INFO L225 Difference]: With dead ends: 151 [2021-12-06 18:22:27,090 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 18:22:27,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:22:27,091 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 10 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:27,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 494 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:22:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 18:22:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-12-06 18:22:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.6764705882352942) internal successors, (171), 144 states have internal predecessors, (171), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2021-12-06 18:22:27,101 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 27 [2021-12-06 18:22:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:27,102 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2021-12-06 18:22:27,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2021-12-06 18:22:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:22:27,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:27,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:27,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:22:27,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:27,305 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash -126280058, now seen corresponding path program 1 times [2021-12-06 18:22:27,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623698178] [2021-12-06 18:22:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:27,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:27,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:27,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:27,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:22:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:27,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 18:22:27,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:27,411 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 18:22:27,455 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 13 treesize of output 9 [2021-12-06 18:22:27,461 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 13 treesize of output 9 [2021-12-06 18:22:27,508 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 19 treesize of output 7 [2021-12-06 18:22:27,510 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 9 [2021-12-06 18:22:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:27,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:27,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:27,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623698178] [2021-12-06 18:22:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623698178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:27,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:27,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:27,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697868728] [2021-12-06 18:22:27,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:27,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:22:27,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:27,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:22:27,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:27,533 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:28,010 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2021-12-06 18:22:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:22:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-12-06 18:22:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:28,012 INFO L225 Difference]: With dead ends: 159 [2021-12-06 18:22:28,012 INFO L226 Difference]: Without dead ends: 159 [2021-12-06 18:22:28,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:22:28,013 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 17 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:28,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 533 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:22:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-06 18:22:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2021-12-06 18:22:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.6666666666666667) internal successors, (170), 143 states have internal predecessors, (170), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2021-12-06 18:22:28,019 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 27 [2021-12-06 18:22:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:28,019 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2021-12-06 18:22:28,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2021-12-06 18:22:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:22:28,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:28,020 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:28,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:22:28,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:28,222 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -126277696, now seen corresponding path program 1 times [2021-12-06 18:22:28,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:28,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310142401] [2021-12-06 18:22:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:28,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:28,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:28,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:22:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:28,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:22:28,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:28,427 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 13 treesize of output 9 [2021-12-06 18:22:28,450 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 20 treesize of output 8 [2021-12-06 18:22:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:28,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:28,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310142401] [2021-12-06 18:22:28,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310142401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:28,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:28,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:22:28,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305418013] [2021-12-06 18:22:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:28,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:22:28,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:22:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:28,461 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:28,617 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2021-12-06 18:22:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:28,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-12-06 18:22:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:28,619 INFO L225 Difference]: With dead ends: 146 [2021-12-06 18:22:28,619 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 18:22:28,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:22:28,620 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 5 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:28,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 701 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:22:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 18:22:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-12-06 18:22:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 140 states have internal predecessors, (165), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2021-12-06 18:22:28,627 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 27 [2021-12-06 18:22:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:28,628 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2021-12-06 18:22:28,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2021-12-06 18:22:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:22:28,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:28,629 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:28,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 18:22:28,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:28,831 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:28,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052090, now seen corresponding path program 1 times [2021-12-06 18:22:28,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:28,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103425254] [2021-12-06 18:22:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:28,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:28,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:28,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:28,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:22:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:28,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:22:28,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:28,978 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 18:22:29,074 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:29,074 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 18:22:33,180 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:22:33,180 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 19 treesize of output 24 [2021-12-06 18:22:33,207 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 13 treesize of output 9 [2021-12-06 18:22:33,261 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 17 treesize of output 11 [2021-12-06 18:22:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 3 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:33,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:22:33,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:33,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103425254] [2021-12-06 18:22:33,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103425254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:33,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:33,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2021-12-06 18:22:33,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844665181] [2021-12-06 18:22:33,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:33,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:22:33,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:22:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=123, Unknown=2, NotChecked=0, Total=156 [2021-12-06 18:22:33,679 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:22:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:40,102 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2021-12-06 18:22:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:22:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2021-12-06 18:22:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:40,103 INFO L225 Difference]: With dead ends: 166 [2021-12-06 18:22:40,104 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 18:22:40,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=54, Invalid=215, Unknown=3, NotChecked=0, Total=272 [2021-12-06 18:22:40,104 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 62 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:40,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 648 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 117 Unchecked, 0.3s Time] [2021-12-06 18:22:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 18:22:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2021-12-06 18:22:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.6372549019607843) internal successors, (167), 142 states have internal predecessors, (167), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:40,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2021-12-06 18:22:40,109 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 29 [2021-12-06 18:22:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:40,110 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2021-12-06 18:22:40,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:22:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2021-12-06 18:22:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:22:40,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:40,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:40,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 18:22:40,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:40,312 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052089, now seen corresponding path program 1 times [2021-12-06 18:22:40,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:40,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548536583] [2021-12-06 18:22:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:40,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:40,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:40,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:40,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 18:22:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:40,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 18:22:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:40,414 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 18:22:40,420 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 18:22:40,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:40,589 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 18:22:40,607 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:40,608 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 24 treesize of output 31 [2021-12-06 18:22:40,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:40,709 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 18:22:40,717 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:40,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 18:22:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:40,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:43,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:43,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548536583] [2021-12-06 18:22:43,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548536583] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:43,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [115039621] [2021-12-06 18:22:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:43,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:43,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 18:22:43,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 18:22:43,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-12-06 18:22:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:43,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 18:22:43,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:43,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:22:43,192 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 18:22:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:43,328 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 18:22:43,343 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:43,344 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 27 treesize of output 34 [2021-12-06 18:22:45,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:45,462 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 18:22:45,469 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:45,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 18:22:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:45,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:45,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [115039621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:45,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:45,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-12-06 18:22:45,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414489890] [2021-12-06 18:22:45,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:45,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:22:45,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:22:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=105, Unknown=1, NotChecked=0, Total=132 [2021-12-06 18:22:45,768 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:46,393 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2021-12-06 18:22:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-12-06 18:22:46,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:46,394 INFO L225 Difference]: With dead ends: 181 [2021-12-06 18:22:46,395 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 18:22:46,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2021-12-06 18:22:46,395 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 81 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:46,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 485 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 381 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2021-12-06 18:22:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 18:22:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2021-12-06 18:22:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 105 states have (on average 1.6285714285714286) internal successors, (171), 144 states have internal predecessors, (171), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2021-12-06 18:22:46,399 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 29 [2021-12-06 18:22:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:46,400 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2021-12-06 18:22:46,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2021-12-06 18:22:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 18:22:46,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:46,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:46,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 18:22:46,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-12-06 18:22:46,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:46,802 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070521, now seen corresponding path program 1 times [2021-12-06 18:22:46,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:46,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903387109] [2021-12-06 18:22:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:46,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:46,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:46,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:46,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 18:22:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:46,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:22:46,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:22:46,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:46,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:46,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903387109] [2021-12-06 18:22:46,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903387109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:46,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:46,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:22:46,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539101831] [2021-12-06 18:22:46,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:46,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:22:46,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:22:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:22:46,907 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:47,093 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2021-12-06 18:22:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:22:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-12-06 18:22:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:47,094 INFO L225 Difference]: With dead ends: 167 [2021-12-06 18:22:47,094 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 18:22:47,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 18:22:47,095 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 109 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:47,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 238 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:22:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 18:22:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2021-12-06 18:22:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 105 states have (on average 1.619047619047619) internal successors, (170), 143 states have internal predecessors, (170), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 178 transitions. [2021-12-06 18:22:47,102 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 178 transitions. Word has length 31 [2021-12-06 18:22:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:47,102 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 178 transitions. [2021-12-06 18:22:47,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 178 transitions. [2021-12-06 18:22:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 18:22:47,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:47,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:47,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:47,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:47,304 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070520, now seen corresponding path program 1 times [2021-12-06 18:22:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385277099] [2021-12-06 18:22:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:47,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:47,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:47,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 18:22:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:47,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:22:47,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:47,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:47,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 18:22:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:47,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:47,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385277099] [2021-12-06 18:22:47,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385277099] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:47,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:47,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 18:22:47,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264081795] [2021-12-06 18:22:47,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:47,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:22:47,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:22:47,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:22:47,807 INFO L87 Difference]: Start difference. First operand 150 states and 178 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 18:22:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:48,472 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2021-12-06 18:22:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2021-12-06 18:22:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:48,473 INFO L225 Difference]: With dead ends: 172 [2021-12-06 18:22:48,473 INFO L226 Difference]: Without dead ends: 172 [2021-12-06 18:22:48,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:22:48,474 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 444 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:48,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 683 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:22:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-06 18:22:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 145. [2021-12-06 18:22:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 138 states have internal predecessors, (163), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-12-06 18:22:48,478 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 31 [2021-12-06 18:22:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:48,478 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-12-06 18:22:48,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 18:22:48,478 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-12-06 18:22:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:22:48,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:48,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:48,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:48,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:48,680 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357432, now seen corresponding path program 1 times [2021-12-06 18:22:48,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:48,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58890162] [2021-12-06 18:22:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:48,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:48,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:48,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 18:22:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:48,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 18:22:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:48,855 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 13 treesize of output 9 [2021-12-06 18:22:48,895 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 20 treesize of output 12 [2021-12-06 18:22:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:48,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:22:49,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:49,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58890162] [2021-12-06 18:22:49,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58890162] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:49,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:22:49,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2021-12-06 18:22:49,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825168377] [2021-12-06 18:22:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:49,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:22:49,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:22:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:22:49,074 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:49,584 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2021-12-06 18:22:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:49,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-12-06 18:22:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:49,585 INFO L225 Difference]: With dead ends: 161 [2021-12-06 18:22:49,585 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 18:22:49,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:22:49,586 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 127 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:49,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 437 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:22:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 18:22:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2021-12-06 18:22:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.588235294117647) internal successors, (162), 137 states have internal predecessors, (162), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2021-12-06 18:22:49,590 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 33 [2021-12-06 18:22:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:49,590 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2021-12-06 18:22:49,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2021-12-06 18:22:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:22:49,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:49,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:49,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:49,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:49,792 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357431, now seen corresponding path program 1 times [2021-12-06 18:22:49,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:49,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889689369] [2021-12-06 18:22:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:49,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:49,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:49,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 18:22:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 18:22:49,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:50,046 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 13 treesize of output 9 [2021-12-06 18:22:50,051 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 13 treesize of output 9 [2021-12-06 18:22:50,110 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 17 treesize of output 9 [2021-12-06 18:22:50,113 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 18:22:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:50,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:50,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 18:22:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:50,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889689369] [2021-12-06 18:22:50,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889689369] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:50,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:22:50,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-12-06 18:22:50,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877183673] [2021-12-06 18:22:50,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:50,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 18:22:50,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 18:22:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:22:50,835 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 18:22:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:52,470 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2021-12-06 18:22:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:22:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2021-12-06 18:22:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:52,472 INFO L225 Difference]: With dead ends: 169 [2021-12-06 18:22:52,472 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 18:22:52,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:22:52,473 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 533 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:52,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1092 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 18:22:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 18:22:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2021-12-06 18:22:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 131 states have internal predecessors, (153), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2021-12-06 18:22:52,477 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 33 [2021-12-06 18:22:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:52,477 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2021-12-06 18:22:52,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 18:22:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2021-12-06 18:22:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:22:52,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:52,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:52,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:52,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:52,679 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:22:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570930, now seen corresponding path program 1 times [2021-12-06 18:22:52,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000845178] [2021-12-06 18:22:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:52,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:52,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:52,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 18:22:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:52,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 18:22:52,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:52,848 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 18:22:52,982 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:52,983 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 26 treesize of output 33 [2021-12-06 18:22:53,166 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:22:53,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-12-06 18:22:53,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:22:53,629 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:22:53,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 49 [2021-12-06 18:22:53,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 36 [2021-12-06 18:22:53,720 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 13 treesize of output 9 [2021-12-06 18:22:53,942 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 18:22:54,199 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:22:54,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 39 [2021-12-06 18:22:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:22:54,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:54,870 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1) v_ArrVal_345))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-12-06 18:22:54,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:22:54,904 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2021-12-06 18:22:54,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:22:54,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 416 treesize of output 408 [2021-12-06 18:22:54,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 452 treesize of output 432 [2021-12-06 18:22:57,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 199 [2021-12-06 18:23:04,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:23:04,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000845178] [2021-12-06 18:23:04,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000845178] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:23:04,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2119388405] [2021-12-06 18:23:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:23:04,831 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 18:23:04,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 18:23:04,832 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 18:23:04,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-12-06 18:23:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:23:04,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 18:23:05,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:23:05,011 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 18:23:05,103 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:23:05,103 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 18:23:05,208 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:23:05,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 54 [2021-12-06 18:23:05,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:23:05,488 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:23:05,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 49 [2021-12-06 18:23:05,547 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 13 treesize of output 9 [2021-12-06 18:23:05,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 36 [2021-12-06 18:23:05,629 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 18:23:05,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:05,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 39 [2021-12-06 18:23:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:23:05,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:23:06,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_383 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_383))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 18:23:06,201 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_383 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1) v_ArrVal_383))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1))))))))))))))))) is different from false [2021-12-06 18:23:06,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:06,240 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-12-06 18:23:06,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:06,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 600 treesize of output 590 [2021-12-06 18:23:06,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 706 treesize of output 674 [2021-12-06 18:23:20,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 220 [2021-12-06 18:23:28,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2119388405] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:23:28,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:23:28,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-12-06 18:23:28,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417110785] [2021-12-06 18:23:28,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:23:28,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:23:28,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:23:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:23:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=785, Unknown=7, NotChecked=174, Total=1056 [2021-12-06 18:23:28,348 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:23:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:23:28,619 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2021-12-06 18:23:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:23:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-12-06 18:23:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:23:28,621 INFO L225 Difference]: With dead ends: 137 [2021-12-06 18:23:28,621 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 18:23:28,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 52 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=90, Invalid=785, Unknown=7, NotChecked=174, Total=1056 [2021-12-06 18:23:28,622 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 4 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:23:28,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 979 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 319 Unchecked, 0.3s Time] [2021-12-06 18:23:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 18:23:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-06 18:23:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 130 states have internal predecessors, (152), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:23:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2021-12-06 18:23:28,625 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 34 [2021-12-06 18:23:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:23:28,625 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2021-12-06 18:23:28,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:23:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2021-12-06 18:23:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:23:28,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:23:28,626 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:23:28,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 18:23:28,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-12-06 18:23:29,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 18:23:29,028 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-12-06 18:23:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:23:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570929, now seen corresponding path program 1 times [2021-12-06 18:23:29,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:23:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609340109] [2021-12-06 18:23:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:23:29,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:23:29,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:23:29,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:23:29,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1997e7a1-9899-4206-9721-72e3351e6166/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 18:23:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:23:29,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-06 18:23:29,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:23:29,173 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 18:23:29,300 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:23:29,300 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 26 treesize of output 33 [2021-12-06 18:23:29,381 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 18:23:29,470 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:23:29,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:23:29,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:23:29,569 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 13 treesize of output 9 [2021-12-06 18:23:29,821 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:23:29,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2021-12-06 18:23:29,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 18:23:29,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 30 [2021-12-06 18:23:29,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 26 [2021-12-06 18:23:30,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:23:30,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:23:30,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:30,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 47 [2021-12-06 18:23:30,336 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:23:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 18:23:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:23:30,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:23:31,658 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_423 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_424 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (bvule (bvadd (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_423))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_424))) (store .cse3 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse3 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))))) (forall ((v_ArrVal_423 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_423))) (store .cse5 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse5 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) (bvule (bvadd .cse4 (_ bv7 32)) (bvadd .cse4 (_ bv8 32)))))) is different from false [2021-12-06 18:23:31,713 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_423 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_424 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3))) (bvule (bvadd (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_423))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3) (_ bv8 32)) (select |c_#length| (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_424))) (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3)))))) (forall ((v_ArrVal_423 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (let ((.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7) v_ArrVal_423))) (store .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7)))) (bvule (bvadd .cse5 (_ bv7 32)) (bvadd .cse5 (_ bv8 32)))))) is different from false [2021-12-06 18:23:31,824 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:31,825 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 84 [2021-12-06 18:23:31,840 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:31,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 64 [2021-12-06 18:23:31,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:31,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 584 treesize of output 576 [2021-12-06 18:23:31,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:23:31,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6144 treesize of output 5958 [2021-12-06 18:23:31,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7118 treesize of output 6734 [2021-12-06 18:23:31,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7654 treesize of output 7254