./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f2246ffe766e45760058f81984fbbf13150b352 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f2246ffe766e45760058f81984fbbf13150b352 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:14:47,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:14:47,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:14:47,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:14:47,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:14:47,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:14:47,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:14:47,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:14:47,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:14:47,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:14:47,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:14:47,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:14:47,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:14:47,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:14:47,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:14:47,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:14:47,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:14:47,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:14:47,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:14:47,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:14:47,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:14:47,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:14:47,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:14:47,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:14:47,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:14:47,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:14:47,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:14:47,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:14:47,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:14:47,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:14:47,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:14:47,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:14:47,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:14:47,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:14:47,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:14:47,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:14:47,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:14:47,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:14:47,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:14:47,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:14:47,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:14:47,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:14:47,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:14:47,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:14:47,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:14:47,908 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:14:47,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:14:47,908 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:14:47,909 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:14:47,909 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:14:47,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:14:47,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:14:47,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:14:47,911 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:14:47,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:14:47,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:14:47,912 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:14:47,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:14:47,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:14:47,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:14:47,913 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:14:47,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:14:47,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:14:47,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:14:47,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:14:47,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:14:47,914 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:14:47,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:14:47,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:14:47,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:14:47,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:14:47,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:14:47,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:14:47,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:14:47,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:14:47,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:14:47,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:14:47,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:14:47,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:14:47,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:14:47,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:14:47,920 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f2246ffe766e45760058f81984fbbf13150b352 [2021-10-16 02:14:48,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:14:48,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:14:48,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:14:48,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:14:48,199 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:14:48,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2021-10-16 02:14:48,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/5b97130a1/a10843ca311a4344807744b32ad02359/FLAG6c32dfe52 [2021-10-16 02:14:48,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:14:48,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2021-10-16 02:14:48,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/5b97130a1/a10843ca311a4344807744b32ad02359/FLAG6c32dfe52 [2021-10-16 02:14:49,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/5b97130a1/a10843ca311a4344807744b32ad02359 [2021-10-16 02:14:49,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:14:49,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:14:49,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:14:49,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:14:49,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:14:49,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2d4ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49, skipping insertion in model container [2021-10-16 02:14:49,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:14:49,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:14:49,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i[23654,23667] [2021-10-16 02:14:49,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:14:49,495 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:14:49,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i[23654,23667] [2021-10-16 02:14:49,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:14:49,565 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:14:49,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49 WrapperNode [2021-10-16 02:14:49,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:14:49,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:14:49,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:14:49,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:14:49,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:14:49,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:14:49,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:14:49,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:14:49,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:14:49,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:14:49,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:14:49,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:14:49,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (1/1) ... [2021-10-16 02:14:49,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:14:49,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:14:49,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:14:49,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:14:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:14:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:14:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:14:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:14:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:14:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:14:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:14:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:14:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:14:49,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:14:50,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:14:50,342 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-16 02:14:50,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:14:50 BoogieIcfgContainer [2021-10-16 02:14:50,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:14:50,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:14:50,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:14:50,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:14:50,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:14:49" (1/3) ... [2021-10-16 02:14:50,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239779dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:14:50, skipping insertion in model container [2021-10-16 02:14:50,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:49" (2/3) ... [2021-10-16 02:14:50,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239779dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:14:50, skipping insertion in model container [2021-10-16 02:14:50,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:14:50" (3/3) ... [2021-10-16 02:14:50,354 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1.i [2021-10-16 02:14:50,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:14:50,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-10-16 02:14:50,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:14:50,417 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:14:50,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-10-16 02:14:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 39 states have (on average 2.358974358974359) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:14:50,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:50,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:14:50,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash 6087039, now seen corresponding path program 1 times [2021-10-16 02:14:50,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:50,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466343324] [2021-10-16 02:14:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:50,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:50,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:50,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466343324] [2021-10-16 02:14:50,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466343324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:50,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:50,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:14:50,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967352473] [2021-10-16 02:14:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:14:50,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:14:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:14:50,630 INFO L87 Difference]: Start difference. First operand has 80 states, 39 states have (on average 2.358974358974359) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:50,646 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-10-16 02:14:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:14:50,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:14:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:50,655 INFO L225 Difference]: With dead ends: 80 [2021-10-16 02:14:50,656 INFO L226 Difference]: Without dead ends: 77 [2021-10-16 02:14:50,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:14:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-16 02:14:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-16 02:14:50,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2021-10-16 02:14:50,691 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 4 [2021-10-16 02:14:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:50,692 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2021-10-16 02:14:50,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2021-10-16 02:14:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:14:50,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:50,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:14:50,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:14:50,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:50,695 INFO L82 PathProgramCache]: Analyzing trace with hash 188802713, now seen corresponding path program 1 times [2021-10-16 02:14:50,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:50,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016157059] [2021-10-16 02:14:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:50,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:50,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:50,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016157059] [2021-10-16 02:14:50,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016157059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:50,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:50,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:14:50,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974392186] [2021-10-16 02:14:50,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:14:50,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:14:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:14:50,759 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:50,931 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-10-16 02:14:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:14:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:14:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:50,933 INFO L225 Difference]: With dead ends: 86 [2021-10-16 02:14:50,933 INFO L226 Difference]: Without dead ends: 86 [2021-10-16 02:14:50,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-16 02:14:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2021-10-16 02:14:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 68 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2021-10-16 02:14:50,942 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 5 [2021-10-16 02:14:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:50,943 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2021-10-16 02:14:50,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2021-10-16 02:14:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:14:50,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:50,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:14:50,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:14:50,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:50,945 INFO L82 PathProgramCache]: Analyzing trace with hash 188802714, now seen corresponding path program 1 times [2021-10-16 02:14:50,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:50,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933847039] [2021-10-16 02:14:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:50,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:51,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:51,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933847039] [2021-10-16 02:14:51,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933847039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:51,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:51,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:14:51,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721798155] [2021-10-16 02:14:51,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:14:51,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:14:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:14:51,064 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:51,258 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2021-10-16 02:14:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:14:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:14:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:51,265 INFO L225 Difference]: With dead ends: 102 [2021-10-16 02:14:51,266 INFO L226 Difference]: Without dead ends: 102 [2021-10-16 02:14:51,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-16 02:14:51,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2021-10-16 02:14:51,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.6) internal successors, (104), 90 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2021-10-16 02:14:51,287 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 5 [2021-10-16 02:14:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:51,288 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2021-10-16 02:14:51,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2021-10-16 02:14:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:14:51,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:51,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:51,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:14:51,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:51,292 INFO L82 PathProgramCache]: Analyzing trace with hash 31036640, now seen corresponding path program 1 times [2021-10-16 02:14:51,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:51,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003418016] [2021-10-16 02:14:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:51,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:51,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:51,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003418016] [2021-10-16 02:14:51,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003418016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:51,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:51,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:14:51,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633386425] [2021-10-16 02:14:51,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:14:51,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:14:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:14:51,450 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:51,589 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2021-10-16 02:14:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:14:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:51,591 INFO L225 Difference]: With dead ends: 117 [2021-10-16 02:14:51,591 INFO L226 Difference]: Without dead ends: 117 [2021-10-16 02:14:51,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:14:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-16 02:14:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 92. [2021-10-16 02:14:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-10-16 02:14:51,612 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 11 [2021-10-16 02:14:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:51,613 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-10-16 02:14:51,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-10-16 02:14:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:14:51,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:51,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:51,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:14:51,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash -211560241, now seen corresponding path program 1 times [2021-10-16 02:14:51,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:51,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302878281] [2021-10-16 02:14:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:51,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:51,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:51,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302878281] [2021-10-16 02:14:51,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302878281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:51,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:51,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:14:51,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735623456] [2021-10-16 02:14:51,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:14:51,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:14:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:14:51,762 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:51,926 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2021-10-16 02:14:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:51,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:14:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:51,928 INFO L225 Difference]: With dead ends: 119 [2021-10-16 02:14:51,928 INFO L226 Difference]: Without dead ends: 119 [2021-10-16 02:14:51,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:14:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-16 02:14:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 94. [2021-10-16 02:14:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.5735294117647058) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2021-10-16 02:14:51,940 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 13 [2021-10-16 02:14:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:51,941 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2021-10-16 02:14:51,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2021-10-16 02:14:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:14:51,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:51,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:51,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:14:51,942 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1195718115, now seen corresponding path program 1 times [2021-10-16 02:14:51,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:51,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327133606] [2021-10-16 02:14:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:51,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:52,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:52,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327133606] [2021-10-16 02:14:52,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327133606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:52,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:52,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:14:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220048557] [2021-10-16 02:14:52,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:14:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:14:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:14:52,032 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:52,122 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2021-10-16 02:14:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:14:52,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:14:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:52,124 INFO L225 Difference]: With dead ends: 98 [2021-10-16 02:14:52,124 INFO L226 Difference]: Without dead ends: 98 [2021-10-16 02:14:52,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-16 02:14:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-10-16 02:14:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-10-16 02:14:52,141 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 14 [2021-10-16 02:14:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:52,142 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-10-16 02:14:52,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-10-16 02:14:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:14:52,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:52,144 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:52,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:14:52,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:52,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:52,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1674447737, now seen corresponding path program 1 times [2021-10-16 02:14:52,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:52,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647750659] [2021-10-16 02:14:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:52,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:52,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:52,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647750659] [2021-10-16 02:14:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647750659] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:52,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:14:52,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632465799] [2021-10-16 02:14:52,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:14:52,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:14:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:52,235 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:52,385 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2021-10-16 02:14:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:52,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:14:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:52,390 INFO L225 Difference]: With dead ends: 102 [2021-10-16 02:14:52,390 INFO L226 Difference]: Without dead ends: 102 [2021-10-16 02:14:52,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:14:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-16 02:14:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2021-10-16 02:14:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2021-10-16 02:14:52,400 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 15 [2021-10-16 02:14:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:52,400 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2021-10-16 02:14:52,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2021-10-16 02:14:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:14:52,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:52,405 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:52,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:14:52,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:52,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1674447738, now seen corresponding path program 1 times [2021-10-16 02:14:52,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:52,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933386947] [2021-10-16 02:14:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:52,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:52,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:52,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933386947] [2021-10-16 02:14:52,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933386947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:52,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:52,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:14:52,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586698387] [2021-10-16 02:14:52,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:14:52,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:14:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:52,487 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:52,643 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-10-16 02:14:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:52,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:14:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:52,645 INFO L225 Difference]: With dead ends: 96 [2021-10-16 02:14:52,645 INFO L226 Difference]: Without dead ends: 96 [2021-10-16 02:14:52,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:14:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-16 02:14:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2021-10-16 02:14:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.459016393442623) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-10-16 02:14:52,648 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 15 [2021-10-16 02:14:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:52,648 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-10-16 02:14:52,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-10-16 02:14:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:14:52,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:52,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:52,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:14:52,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1966120951, now seen corresponding path program 1 times [2021-10-16 02:14:52,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:52,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990665952] [2021-10-16 02:14:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:52,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:52,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:52,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990665952] [2021-10-16 02:14:52,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990665952] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:52,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:52,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:14:52,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259545952] [2021-10-16 02:14:52,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:14:52,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:14:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:14:52,724 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:52,854 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2021-10-16 02:14:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:14:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:52,856 INFO L225 Difference]: With dead ends: 111 [2021-10-16 02:14:52,856 INFO L226 Difference]: Without dead ends: 107 [2021-10-16 02:14:52,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:14:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-16 02:14:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 81. [2021-10-16 02:14:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 80 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2021-10-16 02:14:52,860 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 16 [2021-10-16 02:14:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:52,860 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2021-10-16 02:14:52,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2021-10-16 02:14:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:14:52,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:52,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:52,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:14:52,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:52,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -746664235, now seen corresponding path program 1 times [2021-10-16 02:14:52,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:52,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121727453] [2021-10-16 02:14:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:52,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:52,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:52,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121727453] [2021-10-16 02:14:52,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121727453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:14:52,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:52,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:14:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269776933] [2021-10-16 02:14:52,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:14:52,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:14:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:14:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:14:52,969 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:14:53,147 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-10-16 02:14:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:14:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:14:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:14:53,149 INFO L225 Difference]: With dead ends: 96 [2021-10-16 02:14:53,149 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 02:14:53,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:14:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 02:14:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2021-10-16 02:14:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-10-16 02:14:53,151 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 17 [2021-10-16 02:14:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:14:53,152 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-10-16 02:14:53,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:14:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-10-16 02:14:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:14:53,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:14:53,153 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:14:53,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:14:53,153 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:14:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:14:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash -898753105, now seen corresponding path program 1 times [2021-10-16 02:14:53,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:14:53,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985844264] [2021-10-16 02:14:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:53,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:14:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:53,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:14:53,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985844264] [2021-10-16 02:14:53,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985844264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:14:53,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630496983] [2021-10-16 02:14:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:53,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:14:53,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:14:53,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:14:53,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:14:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:14:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:14:53,714 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 [2021-10-16 02:14:53,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-10-16 02:14:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:14:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:14:53,831 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 17 treesize of output 21 [2021-10-16 02:14:53,926 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:14:53,926 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 11 treesize of output 11 [2021-10-16 02:14:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:14:54,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:14:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:14:54,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-10-16 02:14:54,080 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 18 treesize of output 14 [2021-10-16 02:14:54,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-16 02:14:54,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2021-10-16 02:14:54,333 INFO L354 Elim1Store]: treesize reduction 118, result has 15.7 percent of original size [2021-10-16 02:14:54,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 46 treesize of output 36 [2021-10-16 02:14:54,492 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:14:54,493 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 18 [2021-10-16 02:14:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:54,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:14:54,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:14:54,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:15:01,519 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_71 Int) (v_DerPreprocessor_1 Int)) (not (= 0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base) (+ c_ULTIMATE.start_main_~p~0.offset 8)))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_main_~p~0.offset_71 3) (+ v_ULTIMATE.start_main_~p~0.offset_71 8) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset 4))))) is different from false [2021-10-16 02:15:01,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:01,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:15:02,296 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_71 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (+ c_ULTIMATE.start_main_~p~0.offset 8) v_DerPreprocessor_2)))) (store .cse0 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse0 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_71 3) (+ v_ULTIMATE.start_main_~p~0.offset_71 8) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset 4)) 0))) is different from false [2021-10-16 02:15:02,723 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 366302 treesize of output 363230 [2021-10-16 02:15:29,529 WARN L207 SmtUtils]: Spent 26.80 s on a formula simplification. DAG size of input: 630 DAG size of output: 608 [2021-10-16 02:15:29,589 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:15:29,591 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 290922 treesize of output 290921 [2021-10-16 02:15:42,960 WARN L207 SmtUtils]: Spent 7.90 s on a formula simplification. DAG size of input: 316 DAG size of output: 316 [2021-10-16 02:15:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630496983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:15:47,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [422187417] [2021-10-16 02:15:48,015 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-10-16 02:15:48,016 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:15:48,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:15:48,025 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:15:48,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:15:48,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:15:48,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:15:48,070 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:15:48,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:15:48,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-16 02:15:48,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:15:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:15:48,113 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:15:48,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 02:15:48,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:15:48,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:15:48,117 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:15:48,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:15:48,125 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:48,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-16 02:15:48,127 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:15:48,128 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:98 [2021-10-16 02:15:48,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:48,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-16 02:15:48,354 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_57| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:15:48,357 INFO L168 Benchmark]: Toolchain (without parser) took 59208.57 ms. Allocated memory was 94.4 MB in the beginning and 388.0 MB in the end (delta: 293.6 MB). Free memory was 60.8 MB in the beginning and 256.8 MB in the end (delta: -196.0 MB). Peak memory consumption was 98.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,358 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 48.5 MB in the beginning and 48.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:48,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.74 ms. Allocated memory is still 94.4 MB. Free memory was 60.6 MB in the beginning and 64.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.92 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 62.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,359 INFO L168 Benchmark]: Boogie Preprocessor took 32.07 ms. Allocated memory is still 94.4 MB. Free memory was 62.8 MB in the beginning and 61.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,359 INFO L168 Benchmark]: RCFGBuilder took 701.27 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 41.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,360 INFO L168 Benchmark]: TraceAbstraction took 58010.13 ms. Allocated memory was 94.4 MB in the beginning and 388.0 MB in the end (delta: 293.6 MB). Free memory was 41.5 MB in the beginning and 256.8 MB in the end (delta: -215.3 MB). Peak memory consumption was 82.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:48,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 48.5 MB in the beginning and 48.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.74 ms. Allocated memory is still 94.4 MB. Free memory was 60.6 MB in the beginning and 64.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.92 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 62.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.07 ms. Allocated memory is still 94.4 MB. Free memory was 62.8 MB in the beginning and 61.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 701.27 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 41.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 58010.13 ms. Allocated memory was 94.4 MB in the beginning and 388.0 MB in the end (delta: 293.6 MB). Free memory was 41.5 MB in the beginning and 256.8 MB in the end (delta: -215.3 MB). Peak memory consumption was 82.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_57| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_57|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:15:48,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:15:50,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:15:50,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:15:50,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:15:50,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:15:50,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:15:50,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:15:50,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:15:50,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:15:50,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:15:50,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:15:50,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:15:50,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:15:50,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:15:50,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:15:50,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:15:50,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:15:50,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:15:50,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:15:50,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:15:50,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:15:50,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:15:50,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:15:50,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:15:50,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:15:50,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:15:50,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:15:50,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:15:50,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:15:50,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:15:50,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:15:50,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:15:50,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:15:50,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:15:50,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:15:50,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:15:50,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:15:50,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:15:50,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:15:50,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:15:50,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:15:50,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:15:50,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:15:50,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:15:50,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:15:50,817 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:15:50,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:15:50,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:15:50,818 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:15:50,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:15:50,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:15:50,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:15:50,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:15:50,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:15:50,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:15:50,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:15:50,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:15:50,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:15:50,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:15:50,822 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:15:50,823 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:15:50,823 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:15:50,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:15:50,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:15:50,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:15:50,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:15:50,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:15:50,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:15:50,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:15:50,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:15:50,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:15:50,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:50,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:15:50,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:15:50,826 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:15:50,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:15:50,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:15:50,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:15:50,827 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_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f2246ffe766e45760058f81984fbbf13150b352 [2021-10-16 02:15:51,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:15:51,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:15:51,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:15:51,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:15:51,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:15:51,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2021-10-16 02:15:51,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/983b94e9f/22e3a2dc38d04c4d8f891c319b02da56/FLAGce575601c [2021-10-16 02:15:51,846 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:15:51,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2021-10-16 02:15:51,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/983b94e9f/22e3a2dc38d04c4d8f891c319b02da56/FLAGce575601c [2021-10-16 02:15:52,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/data/983b94e9f/22e3a2dc38d04c4d8f891c319b02da56 [2021-10-16 02:15:52,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:15:52,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:15:52,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:52,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:15:52,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:15:52,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1324d7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52, skipping insertion in model container [2021-10-16 02:15:52,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:15:52,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:15:52,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i[23654,23667] [2021-10-16 02:15:52,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:52,558 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:15:52,629 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i[23654,23667] [2021-10-16 02:15:52,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:52,674 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:15:52,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52 WrapperNode [2021-10-16 02:15:52,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:52,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:52,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:15:52,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:15:52,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:52,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:15:52,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:15:52,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:15:52,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:15:52,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:15:52,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:15:52,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:15:52,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (1/1) ... [2021-10-16 02:15:52,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:52,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:15:52,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:15:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:15:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:15:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:15:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:15:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:15:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:15:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:15:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:15:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:15:53,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:15:53,490 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-16 02:15:53,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:53 BoogieIcfgContainer [2021-10-16 02:15:53,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:15:53,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:15:53,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:15:53,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:15:53,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:15:52" (1/3) ... [2021-10-16 02:15:53,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a122ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:53, skipping insertion in model container [2021-10-16 02:15:53,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:52" (2/3) ... [2021-10-16 02:15:53,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a122ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:53, skipping insertion in model container [2021-10-16 02:15:53,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:53" (3/3) ... [2021-10-16 02:15:53,501 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1.i [2021-10-16 02:15:53,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:15:53,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-10-16 02:15:53,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:15:53,558 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:15:53,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-10-16 02:15:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 46 states have (on average 2.152173913043478) internal successors, (99), 86 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:15:53,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:53,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:15:53,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash 889599246, now seen corresponding path program 1 times [2021-10-16 02:15:53,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:53,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397596640] [2021-10-16 02:15:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:53,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:53,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:53,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:15:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:15:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:53,761 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 [2021-10-16 02:15:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:53,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:53,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:53,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397596640] [2021-10-16 02:15:53,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397596640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:53,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:53,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:15:53,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127828915] [2021-10-16 02:15:53,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:15:53,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:15:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:15:53,924 INFO L87 Difference]: Start difference. First operand has 87 states, 46 states have (on average 2.152173913043478) internal successors, (99), 86 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:54,372 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-10-16 02:15:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:15:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:15:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:54,385 INFO L225 Difference]: With dead ends: 96 [2021-10-16 02:15:54,386 INFO L226 Difference]: Without dead ends: 92 [2021-10-16 02:15:54,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:15:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-16 02:15:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2021-10-16 02:15:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-10-16 02:15:54,432 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 6 [2021-10-16 02:15:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:54,433 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-10-16 02:15:54,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-10-16 02:15:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:15:54,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:54,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:15:54,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:15:54,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:15:54,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:54,647 INFO L82 PathProgramCache]: Analyzing trace with hash 889599247, now seen corresponding path program 1 times [2021-10-16 02:15:54,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:54,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749769457] [2021-10-16 02:15:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:54,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:54,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:54,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:15:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:54,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:15:54,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:54,746 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 [2021-10-16 02:15:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:54,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:55,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:55,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749769457] [2021-10-16 02:15:55,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749769457] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:55,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:55,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:15:55,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440737725] [2021-10-16 02:15:55,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:15:55,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:55,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:15:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:15:55,017 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:55,631 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-10-16 02:15:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:15:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:15:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:55,635 INFO L225 Difference]: With dead ends: 109 [2021-10-16 02:15:55,635 INFO L226 Difference]: Without dead ends: 109 [2021-10-16 02:15:55,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:15:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-16 02:15:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2021-10-16 02:15:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2021-10-16 02:15:55,645 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 6 [2021-10-16 02:15:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2021-10-16 02:15:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2021-10-16 02:15:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:15:55,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:55,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:55,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:15:55,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:15:55,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash -229919302, now seen corresponding path program 1 times [2021-10-16 02:15:55,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:55,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662492001] [2021-10-16 02:15:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:55,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:55,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:55,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:15:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:15:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:56,027 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 [2021-10-16 02:15:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:56,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:56,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:56,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662492001] [2021-10-16 02:15:56,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662492001] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:56,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:56,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:15:56,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584147416] [2021-10-16 02:15:56,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:15:56,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:15:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:15:56,193 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:56,658 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-10-16 02:15:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:15:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:15:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:56,662 INFO L225 Difference]: With dead ends: 143 [2021-10-16 02:15:56,663 INFO L226 Difference]: Without dead ends: 143 [2021-10-16 02:15:56,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:15:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-16 02:15:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 99. [2021-10-16 02:15:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.513157894736842) internal successors, (115), 98 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-10-16 02:15:56,679 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 13 [2021-10-16 02:15:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:56,679 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-10-16 02:15:56,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-10-16 02:15:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:15:56,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:56,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:56,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:15:56,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:15:56,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1882425389, now seen corresponding path program 1 times [2021-10-16 02:15:56,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:56,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023580449] [2021-10-16 02:15:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:56,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:56,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:56,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:56,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:15:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:56,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:15:56,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:57,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:15:57,108 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-16 02:15:57,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 11 [2021-10-16 02:15:57,151 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 [2021-10-16 02:15:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:57,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:57,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:57,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:15:57,314 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 73 treesize of output 69 [2021-10-16 02:15:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:57,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:57,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023580449] [2021-10-16 02:15:57,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023580449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:57,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:57,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-16 02:15:57,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854219094] [2021-10-16 02:15:57,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:15:57,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:15:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:15:57,384 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:58,021 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2021-10-16 02:15:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:15:58,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:15:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:58,023 INFO L225 Difference]: With dead ends: 150 [2021-10-16 02:15:58,023 INFO L226 Difference]: Without dead ends: 150 [2021-10-16 02:15:58,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:15:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-16 02:15:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2021-10-16 02:15:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-16 02:15:58,041 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 15 [2021-10-16 02:15:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:58,042 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-16 02:15:58,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-16 02:15:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:15:58,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:58,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:58,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:58,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:15:58,248 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash 948048802, now seen corresponding path program 1 times [2021-10-16 02:15:58,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:58,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556478493] [2021-10-16 02:15:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:58,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:58,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:15:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:58,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:15:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:58,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:58,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:58,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556478493] [2021-10-16 02:15:58,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556478493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:58,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:58,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-16 02:15:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979062678] [2021-10-16 02:15:58,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:15:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:15:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:15:58,674 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:59,008 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2021-10-16 02:15:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:15:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:15:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:59,011 INFO L225 Difference]: With dead ends: 113 [2021-10-16 02:15:59,011 INFO L226 Difference]: Without dead ends: 113 [2021-10-16 02:15:59,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:15:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-16 02:15:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2021-10-16 02:15:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 103 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-10-16 02:15:59,019 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 16 [2021-10-16 02:15:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-10-16 02:15:59,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-10-16 02:15:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:15:59,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:59,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:59,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:59,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:15:59,232 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:15:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash 28225869, now seen corresponding path program 1 times [2021-10-16 02:15:59,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:15:59,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724218955] [2021-10-16 02:15:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:59,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:15:59,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:15:59,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:15:59,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:15:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:59,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:15:59,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:59,383 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 [2021-10-16 02:15:59,406 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 22 treesize of output 18 [2021-10-16 02:15:59,434 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 24 treesize of output 12 [2021-10-16 02:15:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:59,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:59,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:15:59,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724218955] [2021-10-16 02:15:59,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724218955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:59,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:59,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:15:59,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416046963] [2021-10-16 02:15:59,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:15:59,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:15:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:15:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:15:59,526 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:16:00,027 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2021-10-16 02:16:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:16:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:16:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:16:00,034 INFO L225 Difference]: With dead ends: 111 [2021-10-16 02:16:00,034 INFO L226 Difference]: Without dead ends: 111 [2021-10-16 02:16:00,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:16:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-16 02:16:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2021-10-16 02:16:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-16 02:16:00,048 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 17 [2021-10-16 02:16:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:16:00,048 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-16 02:16:00,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-16 02:16:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:16:00,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:16:00,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:16:00,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:16:00,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:16:00,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:16:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:16:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 28225870, now seen corresponding path program 1 times [2021-10-16 02:16:00,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:16:00,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910926296] [2021-10-16 02:16:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:16:00,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:16:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:16:00,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:16:00,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:16:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:16:00,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:16:00,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:16:00,412 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 [2021-10-16 02:16:00,458 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 [2021-10-16 02:16:00,466 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 19 treesize of output 15 [2021-10-16 02:16:00,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-16 02:16:00,524 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 24 treesize of output 12 [2021-10-16 02:16:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:00,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:16:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:00,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:16:00,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910926296] [2021-10-16 02:16:00,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910926296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:16:00,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:16:00,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:16:00,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902592185] [2021-10-16 02:16:00,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:16:00,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:16:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:16:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:16:00,916 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:16:02,159 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2021-10-16 02:16:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:16:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:16:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:16:02,161 INFO L225 Difference]: With dead ends: 106 [2021-10-16 02:16:02,161 INFO L226 Difference]: Without dead ends: 106 [2021-10-16 02:16:02,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 450.3ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:16:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-16 02:16:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2021-10-16 02:16:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 83 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2021-10-16 02:16:02,167 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 17 [2021-10-16 02:16:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:16:02,167 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2021-10-16 02:16:02,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2021-10-16 02:16:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:16:02,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:16:02,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:16:02,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:16:02,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:16:02,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:16:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:16:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 541837608, now seen corresponding path program 1 times [2021-10-16 02:16:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:16:02,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995330014] [2021-10-16 02:16:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:16:02,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:16:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:16:02,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:16:02,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:16:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:16:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:16:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:16:02,546 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-16 02:16:02,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-16 02:16:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:04,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:16:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:04,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:16:04,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995330014] [2021-10-16 02:16:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995330014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:16:04,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:16:04,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-16 02:16:04,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143403104] [2021-10-16 02:16:04,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:16:04,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:16:04,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:16:04,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:16:04,829 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:16:05,635 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2021-10-16 02:16:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:16:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:16:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:16:05,637 INFO L225 Difference]: With dead ends: 121 [2021-10-16 02:16:05,637 INFO L226 Difference]: Without dead ends: 117 [2021-10-16 02:16:05,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 205.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:16:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-16 02:16:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2021-10-16 02:16:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 87 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2021-10-16 02:16:05,642 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 18 [2021-10-16 02:16:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:16:05,643 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2021-10-16 02:16:05,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2021-10-16 02:16:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:16:05,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:16:05,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:16:05,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:16:05,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:16:05,845 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:16:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:16:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1918273640, now seen corresponding path program 1 times [2021-10-16 02:16:05,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:16:05,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641243968] [2021-10-16 02:16:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:16:05,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:16:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:16:05,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:16:05,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:16:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:16:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:16:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:16:06,063 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 [2021-10-16 02:16:06,069 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 [2021-10-16 02:16:06,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-16 02:16:06,166 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 22 treesize of output 10 [2021-10-16 02:16:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:06,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:16:06,294 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 35 treesize of output 29 [2021-10-16 02:16:06,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:06,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:16:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641243968] [2021-10-16 02:16:06,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641243968] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:16:06,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:16:06,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:16:06,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907778938] [2021-10-16 02:16:06,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:16:06,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:16:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:16:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:16:06,335 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:16:10,322 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-10-16 02:16:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:16:10,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-16 02:16:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:16:10,323 INFO L225 Difference]: With dead ends: 107 [2021-10-16 02:16:10,324 INFO L226 Difference]: Without dead ends: 98 [2021-10-16 02:16:10,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3650.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:16:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-16 02:16:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2021-10-16 02:16:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 78 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2021-10-16 02:16:10,328 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 20 [2021-10-16 02:16:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:16:10,328 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2021-10-16 02:16:10,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:16:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2021-10-16 02:16:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:16:10,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:16:10,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:16:10,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:16:10,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:16:10,539 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 36 more)] === [2021-10-16 02:16:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:16:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 822235764, now seen corresponding path program 1 times [2021-10-16 02:16:10,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:16:10,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354963070] [2021-10-16 02:16:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:16:10,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:16:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:16:10,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:16:10,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:16:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:16:10,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:16:10,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:16:10,793 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 [2021-10-16 02:16:10,857 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 [2021-10-16 02:16:10,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:10,980 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 21 treesize of output 20 [2021-10-16 02:16:11,064 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:16:11,064 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 20 treesize of output 20 [2021-10-16 02:16:11,158 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 18 treesize of output 14 [2021-10-16 02:16:11,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:11,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:16:11,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:16:11,263 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 [2021-10-16 02:16:11,381 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:16:11,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-10-16 02:16:11,501 INFO L354 Elim1Store]: treesize reduction 136, result has 15.0 percent of original size [2021-10-16 02:16:11,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 37 [2021-10-16 02:16:11,746 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-16 02:16:11,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2021-10-16 02:16:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:11,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:16:11,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:16:11,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:16:38,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:16:38,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-16 02:17:01,074 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~t~0.base_16 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_71 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~t~0.base_16))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset (_ bv2 32)) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv8 32)) v_DerPreprocessor_3)))) (store .cse0 v_ULTIMATE.start_main_~t~0.base_16 (store (store (select .cse0 v_ULTIMATE.start_main_~t~0.base_16) v_ULTIMATE.start_main_~p~0.offset_71 (_ bv3 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_71 (_ bv8 32)) v_DerPreprocessor_2))) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (_ bv0 32)))) is different from false [2021-10-16 02:17:09,615 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 2901408 treesize of output 2876832 [2021-10-16 02:20:51,960 WARN L207 SmtUtils]: Spent 3.71 m on a formula simplification. DAG size of input: 713 DAG size of output: 703 [2021-10-16 02:20:52,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:52,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354963070] [2021-10-16 02:20:52,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:20:52,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549253777] [2021-10-16 02:20:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:52,050 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:52,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:20:52,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:20:52,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:20:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:52,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:20:52,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:52,467 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 [2021-10-16 02:20:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:53,136 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 21 treesize of output 20 [2021-10-16 02:20:53,332 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:20:53,332 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 19 treesize of output 19 [2021-10-16 02:20:53,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:53,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:53,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:20:53,568 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 18 treesize of output 14 [2021-10-16 02:20:53,745 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 [2021-10-16 02:20:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:54,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-10-16 02:20:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:54,237 INFO L354 Elim1Store]: treesize reduction 126, result has 16.0 percent of original size [2021-10-16 02:20:54,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 47 treesize of output 37 [2021-10-16 02:20:54,660 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:20:54,660 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 17 [2021-10-16 02:20:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:54,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:54,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:54,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:21:00,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:00,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-16 02:21:24,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:24,003 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 86994 treesize of output 85467 [2021-10-16 02:21:28,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:21:28,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689218669] [2021-10-16 02:21:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:28,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:21:28,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:21:28,532 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:21:28,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:21:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:28,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:21:28,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:21:28,807 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 [2021-10-16 02:21:28,944 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 [2021-10-16 02:21:29,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,063 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 21 treesize of output 20 [2021-10-16 02:21:29,136 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:21:29,136 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 20 treesize of output 20 [2021-10-16 02:21:29,204 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 18 treesize of output 14 [2021-10-16 02:21:29,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:21:29,266 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 [2021-10-16 02:21:29,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-10-16 02:21:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:21:29,411 INFO L354 Elim1Store]: treesize reduction 126, result has 16.0 percent of original size [2021-10-16 02:21:29,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 47 treesize of output 37 [2021-10-16 02:21:29,671 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:21:29,671 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 17 [2021-10-16 02:21:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:21:29,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:29,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:29,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:21:37,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:37,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-16 02:21:39,869 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_71 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv8 32)) v_DerPreprocessor_7)))) (store .cse0 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse0 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_71 (_ bv3 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_71 (_ bv8 32)) v_DerPreprocessor_2))) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:21:46,397 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 2901408 treesize of output 2876832 [2021-10-16 02:25:32,159 WARN L207 SmtUtils]: Spent 3.76 m on a formula simplification. DAG size of input: 713 DAG size of output: 703 [2021-10-16 02:25:32,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:25:32,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:25:32,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:25:32,175 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:25:32,175 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:25:32,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:25:32,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:25:32,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:25:32,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:25:32,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:25:32,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:25:32,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:25:32,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:25:32,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:25:32,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 02:25:32,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 02:25:32,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 02:25:32,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 02:25:32,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 02:25:32,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-16 02:25:32,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-16 02:25:32,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-16 02:25:32,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-16 02:25:32,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:25:32,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:25:32,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:32,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:32,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:32,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:32,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:25:32,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:25:32 BoogieIcfgContainer [2021-10-16 02:25:32,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:25:32,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:25:32,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:25:32,844 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:25:32,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:53" (3/4) ... [2021-10-16 02:25:32,850 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:25:32,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:25:32,851 INFO L168 Benchmark]: Toolchain (without parser) took 580716.77 ms. Allocated memory was 71.3 MB in the beginning and 413.1 MB in the end (delta: 341.8 MB). Free memory was 51.4 MB in the beginning and 168.2 MB in the end (delta: -116.8 MB). Peak memory consumption was 224.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,851 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:32,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.75 ms. Allocated memory is still 71.3 MB. Free memory was 51.2 MB in the beginning and 46.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.05 ms. Allocated memory is still 71.3 MB. Free memory was 46.2 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,852 INFO L168 Benchmark]: Boogie Preprocessor took 35.36 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 42.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,853 INFO L168 Benchmark]: RCFGBuilder took 697.44 ms. Allocated memory is still 71.3 MB. Free memory was 42.2 MB in the beginning and 47.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,853 INFO L168 Benchmark]: TraceAbstraction took 579349.30 ms. Allocated memory was 71.3 MB in the beginning and 413.1 MB in the end (delta: 341.8 MB). Free memory was 46.5 MB in the beginning and 168.2 MB in the end (delta: -121.7 MB). Peak memory consumption was 250.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:32,854 INFO L168 Benchmark]: Witness Printer took 5.96 ms. Allocated memory is still 413.1 MB. Free memory is still 168.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:32,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 540.75 ms. Allocated memory is still 71.3 MB. Free memory was 51.2 MB in the beginning and 46.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.05 ms. Allocated memory is still 71.3 MB. Free memory was 46.2 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.36 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 42.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 697.44 ms. Allocated memory is still 71.3 MB. Free memory was 42.2 MB in the beginning and 47.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 579349.30 ms. Allocated memory was 71.3 MB in the beginning and 413.1 MB in the end (delta: 341.8 MB). Free memory was 46.5 MB in the beginning and 168.2 MB in the end (delta: -121.7 MB). Peak memory consumption was 250.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.96 ms. Allocated memory is still 413.1 MB. Free memory is still 168.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 576]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 576. Possible FailurePath: [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] int i = 0; [L538] COND TRUE i < 20 && __VERIFIER_nondet_int() [L539] i++ [L540] p->flag = __VERIFIER_nondet_int() [L541] p->flag [L541] COND FALSE !(p->flag) [L544] p->h = 2 [L546] t = (List) malloc(sizeof(struct node)) [L547] COND FALSE !(t == 0) [L548] p->n = t [L549] EXPR p->n [L549] p = p->n [L538] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L551] p->h = 3 [L552] p->n = 0 [L553] p = a [L554] i = 0 [L555] EXPR p->h [L555] COND TRUE p->h != 3 [L556] p->flag [L556] COND TRUE p->flag [L557] EXPR p->h [L557] COND TRUE p->h != 1 [L576] reach_error() - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 40 error locations. Started 1 CEGAR loops. OverallTime: 579265.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 21.1ms, AutomataDifference: 9106.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 406 SDtfs, 1158 SDslu, 958 SDs, 0 SdLazy, 1490 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4076.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4899.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=5, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 107.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 213 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 83.4ms SsaConstructionTime, 258.4ms SatisfiabilityAnalysisTime, 4792.5ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 238 ConstructedInterpolants, 18 QuantifiedInterpolants, 2062 SizeOfPredicates, 43 NumberOfNonLiveVariables, 574 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:25:32,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1022b106-7dd1-4a9c-8d4f-271ffbfeac3d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...