./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:26:35,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:26:35,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:26:35,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:26:35,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:26:35,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:26:35,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:26:35,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:26:35,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:26:35,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:26:35,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:26:35,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:26:35,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:26:35,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:26:35,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:26:35,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:26:35,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:26:35,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:26:35,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:26:35,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:26:35,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:26:35,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:26:35,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:26:35,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:26:35,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:26:35,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:26:35,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:26:35,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:26:35,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:26:35,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:26:35,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:26:35,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:26:35,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:26:35,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:26:35,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:26:35,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:26:35,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:26:35,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:26:35,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:26:35,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:26:35,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:26:35,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:26:35,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:26:35,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:26:35,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:26:35,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:26:35,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:26:35,898 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:26:35,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:26:35,899 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:26:35,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:26:35,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:26:35,899 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:26:35,899 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:26:35,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:26:35,900 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:26:35,900 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:26:35,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:26:35,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:26:35,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:26:35,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:26:35,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:26:35,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:26:35,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:26:35,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:26:35,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:26:35,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:26:35,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:26:35,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:26:35,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:26:35,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:26:35,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:26:35,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:26:35,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:26:35,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:26:35,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:26:35,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:26:35,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:26:35,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:26:35,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:26:35,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:26:35,908 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_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-11-03 05:26:36,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:26:36,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:26:36,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:26:36,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:26:36,194 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:26:36,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/heap-data/running_example.i [2021-11-03 05:26:36,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/8d4afdcd1/ed539857bd1648c0a04f1a02dd3cdfbf/FLAG1a27eb483 [2021-11-03 05:26:36,820 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:26:36,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i [2021-11-03 05:26:36,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/8d4afdcd1/ed539857bd1648c0a04f1a02dd3cdfbf/FLAG1a27eb483 [2021-11-03 05:26:37,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/8d4afdcd1/ed539857bd1648c0a04f1a02dd3cdfbf [2021-11-03 05:26:37,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:26:37,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:26:37,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:26:37,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:26:37,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:26:37,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42df5715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37, skipping insertion in model container [2021-11-03 05:26:37,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:26:37,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:26:37,503 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_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-03 05:26:37,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:26:37,516 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:26:37,554 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_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-03 05:26:37,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:26:37,585 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:26:37,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37 WrapperNode [2021-11-03 05:26:37,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:26:37,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:26:37,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:26:37,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:26:37,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:26:37,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:26:37,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:26:37,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:26:37,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:26:37,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:26:37,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:26:37,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:26:37,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (1/1) ... [2021-11-03 05:26:37,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:26:37,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:26:37,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:26:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:26:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:26:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:26:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:26:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:26:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:26:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:26:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:26:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:26:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:26:38,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:26:38,214 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 05:26:38,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:26:38 BoogieIcfgContainer [2021-11-03 05:26:38,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:26:38,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:26:38,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:26:38,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:26:38,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:26:37" (1/3) ... [2021-11-03 05:26:38,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cf9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:26:38, skipping insertion in model container [2021-11-03 05:26:38,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:37" (2/3) ... [2021-11-03 05:26:38,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cf9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:26:38, skipping insertion in model container [2021-11-03 05:26:38,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:26:38" (3/3) ... [2021-11-03 05:26:38,231 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-11-03 05:26:38,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:26:38,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:26:38,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:26:38,291 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-03 05:26:38,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:26:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) [2021-11-03 05:26:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:26:38,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:38,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:26:38,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1470856896, now seen corresponding path program 1 times [2021-11-03 05:26:38,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:38,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696204994] [2021-11-03 05:26:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:38,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:38,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:38,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696204994] [2021-11-03 05:26:38,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696204994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:38,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:38,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:26:38,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73430067] [2021-11-03 05:26:38,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:26:38,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:26:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:26:38,549 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-03 05:26:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:38,562 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2021-11-03 05:26:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:26:38,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-11-03 05:26:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:38,571 INFO L225 Difference]: With dead ends: 18 [2021-11-03 05:26:38,572 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 05:26:38,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:26:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 05:26:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 05:26:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-11-03 05:26:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-03 05:26:38,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2021-11-03 05:26:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:38,602 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-03 05:26:38,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-03 05:26:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-03 05:26:38,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:26:38,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:38,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:38,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:26:38,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:38,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 237321750, now seen corresponding path program 1 times [2021-11-03 05:26:38,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:38,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298756688] [2021-11-03 05:26:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:38,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:38,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:38,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298756688] [2021-11-03 05:26:38,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298756688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:38,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:38,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:26:38,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266773616] [2021-11-03 05:26:38,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:26:38,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:26:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:26:38,730 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-03 05:26:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:38,832 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-11-03 05:26:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:26:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-03 05:26:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:38,833 INFO L225 Difference]: With dead ends: 22 [2021-11-03 05:26:38,833 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 05:26:38,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:26:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 05:26:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-03 05:26:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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) [2021-11-03 05:26:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-03 05:26:38,839 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-11-03 05:26:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:38,840 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-03 05:26:38,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-03 05:26:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-03 05:26:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:26:38,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:38,842 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:38,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:26:38,842 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash 540596448, now seen corresponding path program 1 times [2021-11-03 05:26:38,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:38,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063111672] [2021-11-03 05:26:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:38,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:39,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:39,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063111672] [2021-11-03 05:26:39,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063111672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:26:39,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372986933] [2021-11-03 05:26:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:39,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:26:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:26:39,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:26:39,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:26:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:39,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:26:39,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:39,288 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 [2021-11-03 05:26:39,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:39,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:39,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:39,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:39,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 05:26:39,654 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 54 treesize of output 50 [2021-11-03 05:26:39,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-11-03 05:26:39,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 05:26:39,673 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 28 treesize of output 24 [2021-11-03 05:26:39,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-03 05:26:39,679 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:26:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:39,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:39,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-03 05:26:39,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [656272253] [2021-11-03 05:26:39,787 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-03 05:26:39,787 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:26:39,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:26:39,797 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:26:39,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:26:39,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 05:26:39,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:26:39,839 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:26:39,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 05:26:39,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,847 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 05:26:39,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 05:26:39,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 05:26:39,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 05:26:39,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:26:39,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:39,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 05:26:39,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-11-03 05:26:39,873 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3845c04f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) 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:609) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-11-03 05:26:39,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-03 05:26:39,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-03 05:26:39,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320310962] [2021-11-03 05:26:39,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:26:39,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:26:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:26:39,883 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2021-11-03 05:26:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:26:39,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:40,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:26:40,104 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3845c04f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-11-03 05:26:40,107 INFO L168 Benchmark]: Toolchain (without parser) took 2945.76 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 61.5 MB in the beginning and 61.2 MB in the end (delta: 332.2 kB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,107 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:26:40,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.34 ms. Allocated memory is still 100.7 MB. Free memory was 61.3 MB in the beginning and 70.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.57 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 68.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,109 INFO L168 Benchmark]: Boogie Preprocessor took 27.05 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 66.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,110 INFO L168 Benchmark]: RCFGBuilder took 558.69 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 51.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,110 INFO L168 Benchmark]: TraceAbstraction took 1887.33 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 61.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:26:40,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.34 ms. Allocated memory is still 100.7 MB. Free memory was 61.3 MB in the beginning and 70.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.57 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 68.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.05 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 66.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.69 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 51.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1887.33 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 61.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3845c04f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3845c04f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-03 05:26:40,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:26:42,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:26:42,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:26:42,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:26:42,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:26:42,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:26:42,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:26:42,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:26:42,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:26:42,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:26:42,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:26:42,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:26:42,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:26:42,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:26:42,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:26:42,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:26:42,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:26:42,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:26:42,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:26:42,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:26:42,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:26:42,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:26:42,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:26:42,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:26:42,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:26:42,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:26:42,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:26:42,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:26:42,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:26:42,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:26:42,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:26:42,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:26:42,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:26:42,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:26:42,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:26:42,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:26:42,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:26:42,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:26:42,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:26:42,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:26:42,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:26:42,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:26:42,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:26:42,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:26:42,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:26:42,641 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:26:42,641 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:26:42,641 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:26:42,642 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:26:42,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:26:42,642 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:26:42,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:26:42,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:26:42,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:26:42,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:26:42,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:26:42,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:26:42,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:26:42,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:26:42,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:26:42,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:26:42,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:26:42,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:26:42,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:26:42,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:26:42,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:26:42,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:26:42,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:26:42,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:26:42,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:26:42,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:26:42,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:26:42,648 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:26:42,648 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:26:42,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:26:42,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:26:42,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:26:42,649 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_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-11-03 05:26:42,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:26:42,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:26:42,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:26:42,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:26:42,997 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:26:42,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/heap-data/running_example.i [2021-11-03 05:26:43,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/48858d87f/5b40ae5fcbc84e4bb079d15b19947b3e/FLAG78692f88f [2021-11-03 05:26:43,624 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:26:43,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i [2021-11-03 05:26:43,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/48858d87f/5b40ae5fcbc84e4bb079d15b19947b3e/FLAG78692f88f [2021-11-03 05:26:43,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/data/48858d87f/5b40ae5fcbc84e4bb079d15b19947b3e [2021-11-03 05:26:43,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:26:43,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:26:43,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:26:43,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:26:43,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:26:43,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:26:43" (1/1) ... [2021-11-03 05:26:43,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2214a138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:43, skipping insertion in model container [2021-11-03 05:26:43,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:26:43" (1/1) ... [2021-11-03 05:26:43,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:26:43,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:26:44,275 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_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-03 05:26:44,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:26:44,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:26:44,365 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_335248f0-6d19-4651-8856-722875becea8/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-03 05:26:44,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:26:44,417 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:26:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44 WrapperNode [2021-11-03 05:26:44,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:26:44,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:26:44,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:26:44,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:26:44,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:26:44,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:26:44,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:26:44,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:26:44,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:26:44,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:26:44,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:26:44,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:26:44,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (1/1) ... [2021-11-03 05:26:44,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:26:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:26:44,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:26:44,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:26:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:26:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:26:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:26:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:26:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:26:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:26:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:26:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:26:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:26:45,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:26:45,103 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 05:26:45,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:26:45 BoogieIcfgContainer [2021-11-03 05:26:45,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:26:45,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:26:45,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:26:45,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:26:45,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:26:43" (1/3) ... [2021-11-03 05:26:45,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edfe2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:26:45, skipping insertion in model container [2021-11-03 05:26:45,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:26:44" (2/3) ... [2021-11-03 05:26:45,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edfe2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:26:45, skipping insertion in model container [2021-11-03 05:26:45,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:26:45" (3/3) ... [2021-11-03 05:26:45,114 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-11-03 05:26:45,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:26:45,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:26:45,166 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:26:45,172 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-03 05:26:45,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:26:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 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) [2021-11-03 05:26:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:26:45,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:45,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:45,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash 508893296, now seen corresponding path program 1 times [2021-11-03 05:26:45,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:26:45,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112736980] [2021-11-03 05:26:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:45,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:26:45,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:26:45,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:26:45,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:26:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:45,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:26:45,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:45,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:45,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:26:45,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112736980] [2021-11-03 05:26:45,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112736980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:45,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:45,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:26:45,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322471867] [2021-11-03 05:26:45,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:26:45,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:26:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:26:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:26:45,455 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-03 05:26:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:45,470 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2021-11-03 05:26:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:26:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-03 05:26:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:45,481 INFO L225 Difference]: With dead ends: 26 [2021-11-03 05:26:45,481 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 05:26:45,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:26:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 05:26:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 05:26:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-11-03 05:26:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-11-03 05:26:45,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2021-11-03 05:26:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:45,526 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-03 05:26:45,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-03 05:26:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-11-03 05:26:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:26:45,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:45,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:45,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:45,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:26:45,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 307872697, now seen corresponding path program 1 times [2021-11-03 05:26:45,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:26:45,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535722158] [2021-11-03 05:26:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:45,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:26:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:26:45,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:26:45,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:26:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:45,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:26:45,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:45,912 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 [2021-11-03 05:26:46,093 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 29 treesize of output 17 [2021-11-03 05:26:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:46,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:46,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:26:46,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535722158] [2021-11-03 05:26:46,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535722158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:46,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:46,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 05:26:46,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505242505] [2021-11-03 05:26:46,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:26:46,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:26:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:26:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:26:46,198 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-03 05:26:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:46,889 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2021-11-03 05:26:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:26:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 9 [2021-11-03 05:26:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:46,893 INFO L225 Difference]: With dead ends: 52 [2021-11-03 05:26:46,893 INFO L226 Difference]: Without dead ends: 43 [2021-11-03 05:26:46,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:26:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-03 05:26:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-11-03 05:26:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 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) [2021-11-03 05:26:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-11-03 05:26:46,908 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 9 [2021-11-03 05:26:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:46,909 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-11-03 05:26:46,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-03 05:26:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-11-03 05:26:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:26:46,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:46,917 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:46,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:47,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:26:47,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:47,122 INFO L85 PathProgramCache]: Analyzing trace with hash -44654956, now seen corresponding path program 1 times [2021-11-03 05:26:47,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:26:47,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390764743] [2021-11-03 05:26:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:47,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:26:47,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:26:47,125 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:26:47,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:26:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:47,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:26:47,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:47,280 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 [2021-11-03 05:26:47,289 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 [2021-11-03 05:26:47,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:47,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 05:26:47,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:47,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:26:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:47,537 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-03 05:26:47,538 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 3 case distinctions, treesize of input 59 treesize of output 51 [2021-11-03 05:26:47,552 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:26:47,553 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 23 treesize of output 23 [2021-11-03 05:26:47,666 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 29 treesize of output 17 [2021-11-03 05:26:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:47,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:47,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:47,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:26:47,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:47,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:26:49,846 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_18 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_18 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_4)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_18 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_18) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_18) v_DerPreprocessor_3) v_ULTIMATE.start_main_~p~0.offset_18 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_18)))))) is different from false [2021-11-03 05:26:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 05:26:50,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:26:50,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390764743] [2021-11-03 05:26:50,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390764743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:50,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620184185] [2021-11-03 05:26:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:50,021 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:26:50,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:26:50,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:26:50,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:26:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:26:50,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:50,216 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 [2021-11-03 05:26:50,234 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 [2021-11-03 05:26:50,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:50,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 05:26:50,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:50,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:26:50,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:50,481 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-03 05:26:50,482 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 3 case distinctions, treesize of input 59 treesize of output 51 [2021-11-03 05:26:50,499 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:26:50,500 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 23 treesize of output 23 [2021-11-03 05:26:50,575 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 29 treesize of output 17 [2021-11-03 05:26:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:50,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:50,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:50,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:26:50,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:50,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:26:52,716 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_21))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_8)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_21 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_21) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_21) v_DerPreprocessor_7) v_ULTIMATE.start_main_~p~0.offset_21 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:26:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 05:26:52,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620184185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:52,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570244747] [2021-11-03 05:26:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:52,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:26:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:26:52,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:26:52,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 05:26:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:52,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:26:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:53,013 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 [2021-11-03 05:26:53,032 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 [2021-11-03 05:26:53,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:53,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 05:26:53,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:53,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 05:26:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:53,264 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-03 05:26:53,265 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 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-03 05:26:53,281 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:26:53,282 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 26 treesize of output 26 [2021-11-03 05:26:53,357 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 29 treesize of output 17 [2021-11-03 05:26:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:53,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:53,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:53,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:26:53,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:53,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:26:55,484 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_24 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_24 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_12)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_24 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_24) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_24) v_DerPreprocessor_11) v_ULTIMATE.start_main_~p~0.offset_24 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_24))))))) is different from false [2021-11-03 05:26:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-03 05:26:55,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570244747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:55,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:26:55,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-11-03 05:26:55,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470816558] [2021-11-03 05:26:55,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:26:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:26:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:26:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=42, Unknown=3, NotChecked=42, Total=110 [2021-11-03 05:26:55,622 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-03 05:26:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:56,742 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2021-11-03 05:26:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:26:56,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 12 [2021-11-03 05:26:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:56,745 INFO L225 Difference]: With dead ends: 69 [2021-11-03 05:26:56,745 INFO L226 Difference]: Without dead ends: 60 [2021-11-03 05:26:56,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=82, Invalid=137, Unknown=3, NotChecked=84, Total=306 [2021-11-03 05:26:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-03 05:26:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 32. [2021-11-03 05:26:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 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) [2021-11-03 05:26:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-11-03 05:26:56,753 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 12 [2021-11-03 05:26:56,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:56,754 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-11-03 05:26:56,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-03 05:26:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-11-03 05:26:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 05:26:56,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:56,755 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:56,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:56,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:57,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:57,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:26:57,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -893074814, now seen corresponding path program 1 times [2021-11-03 05:26:57,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:26:57,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553418978] [2021-11-03 05:26:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:57,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:26:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:26:57,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:26:57,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:26:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:26:57,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:57,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:57,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:57,744 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 23 treesize of output 11 [2021-11-03 05:26:57,754 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 23 treesize of output 11 [2021-11-03 05:26:57,777 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 29 treesize of output 21 [2021-11-03 05:26:57,782 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 18 treesize of output 10 [2021-11-03 05:26:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:57,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:57,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:57,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:26:57,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:57,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:26:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:58,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:26:58,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553418978] [2021-11-03 05:26:58,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553418978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:58,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2036861470] [2021-11-03 05:26:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:58,086 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:26:58,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:26:58,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:26:58,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-03 05:26:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:58,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:26:58,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:58,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:58,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:58,458 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 23 treesize of output 11 [2021-11-03 05:26:58,469 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 23 treesize of output 11 [2021-11-03 05:26:58,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-03 05:26:58,512 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 18 treesize of output 10 [2021-11-03 05:26:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:58,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:58,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:58,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:26:58,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:58,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:26:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:58,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2036861470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:58,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995559543] [2021-11-03 05:26:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:58,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:26:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:26:58,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:26:58,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 05:26:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:58,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:26:58,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:26:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:58,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:26:58,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-03 05:26:59,079 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 23 treesize of output 11 [2021-11-03 05:26:59,089 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 23 treesize of output 11 [2021-11-03 05:26:59,115 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 29 treesize of output 21 [2021-11-03 05:26:59,120 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 18 treesize of output 10 [2021-11-03 05:26:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:59,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:26:59,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:59,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:26:59,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:26:59,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:26:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:59,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995559543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:26:59,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:26:59,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2021-11-03 05:26:59,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865533737] [2021-11-03 05:26:59,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:26:59,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:26:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:26:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:26:59,335 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-11-03 05:26:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:59,860 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-11-03 05:26:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:26:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 [2021-11-03 05:26:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:59,864 INFO L225 Difference]: With dead ends: 68 [2021-11-03 05:26:59,864 INFO L226 Difference]: Without dead ends: 59 [2021-11-03 05:26:59,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:26:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-03 05:26:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-11-03 05:26:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 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) [2021-11-03 05:26:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-11-03 05:26:59,876 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 15 [2021-11-03 05:26:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-11-03 05:26:59,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-11-03 05:26:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-11-03 05:26:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 05:26:59,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:59,878 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:59,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-03 05:27:00,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:00,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-03 05:27:00,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:27:00,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:27:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1000926759, now seen corresponding path program 2 times [2021-11-03 05:27:00,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:27:00,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536487705] [2021-11-03 05:27:00,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:27:00,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:27:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:27:00,490 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:27:00,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:27:00,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:27:00,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:27:00,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:27:00,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:00,770 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 [2021-11-03 05:27:00,784 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 [2021-11-03 05:27:00,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:27:00,912 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 [2021-11-03 05:27:00,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:00,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:27:00,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:00,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:27:00,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:00,967 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 05:27:00,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-03 05:27:01,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:01,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:27:01,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:01,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 05:27:01,215 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-03 05:27:01,215 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 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-03 05:27:01,410 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 38 treesize of output 22 [2021-11-03 05:27:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:27:01,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:01,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:01,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:01,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:01,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:03,595 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-11-03 05:27:03,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:03,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 05:27:03,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:03,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-03 05:27:06,046 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_16 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_40 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_23 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_22))))) (bvsgt v_ULTIMATE.start_main_~x~0_16 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_16 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_26)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_22 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_22) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_40) v_DerPreprocessor_25) v_ULTIMATE.start_main_~p~0.offset_40 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_23) v_DerPreprocessor_24))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) v_ULTIMATE.start_main_~x~0_16))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:27:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-03 05:27:06,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:27:06,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536487705] [2021-11-03 05:27:06,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536487705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:06,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657165276] [2021-11-03 05:27:06,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:27:06,618 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:27:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:27:06,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:27:06,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:27:06,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:27:06,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134053757] [2021-11-03 05:27:06,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:27:06,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:27:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:27:06,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:27:06,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 1 [2021-11-03 05:27:06,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 05:27:07,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:27:07,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:27:07,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:27:07,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:07,264 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 [2021-11-03 05:27:07,279 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 [2021-11-03 05:27:07,410 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:27:07,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-03 05:27:07,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:07,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:27:07,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:07,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:27:07,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:07,474 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 05:27:07,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-03 05:27:07,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:07,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-03 05:27:07,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:07,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-03 05:27:07,834 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:27:07,834 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 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-03 05:27:07,875 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 05:27:07,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 46 [2021-11-03 05:27:08,013 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 29 treesize of output 17 [2021-11-03 05:27:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:27:08,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:08,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:08,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:27:08,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:08,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:27:10,144 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) is different from false [2021-11-03 05:27:10,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:10,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-03 05:27:10,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:10,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-03 05:27:12,430 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_29 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_27 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_44 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_20 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_34)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_27 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_44) v_DerPreprocessor_33) v_ULTIMATE.start_main_~p~0.offset_44 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_29) v_DerPreprocessor_32))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 v_ULTIMATE.start_main_~x~0_20))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_43)))))))) is different from false [2021-11-03 05:27:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-03 05:27:12,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134053757] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:12,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:27:12,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 16 [2021-11-03 05:27:12,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711037877] [2021-11-03 05:27:12,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:27:12,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:27:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:27:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=99, Unknown=4, NotChecked=92, Total=240 [2021-11-03 05:27:12,807 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2021-11-03 05:27:15,208 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (not (bvslt .cse1 (_ bv10 32))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse1 (_ bv20 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse3 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse3)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))))) is different from false [2021-11-03 05:27:17,274 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse2 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse2)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))))))) is different from false [2021-11-03 05:27:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:18,155 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2021-11-03 05:27:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 05:27:18,157 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 [2021-11-03 05:27:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:18,159 INFO L225 Difference]: With dead ends: 144 [2021-11-03 05:27:18,159 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 05:27:18,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=129, Invalid=269, Unknown=6, NotChecked=246, Total=650 [2021-11-03 05:27:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 05:27:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2021-11-03 05:27:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 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) [2021-11-03 05:27:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2021-11-03 05:27:18,173 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 15 [2021-11-03 05:27:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:18,173 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2021-11-03 05:27:18,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2021-11-03 05:27:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2021-11-03 05:27:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:27:18,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:18,178 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:27:18,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:18,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:18,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:27:18,593 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:27:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -128474150, now seen corresponding path program 1 times [2021-11-03 05:27:18,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:27:18,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803271920] [2021-11-03 05:27:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:18,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:27:18,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:27:18,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:27:18,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:27:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:18,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:27:18,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:18,802 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 [2021-11-03 05:27:18,866 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 [2021-11-03 05:27:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:27:18,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:27:19,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:27:19,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803271920] [2021-11-03 05:27:19,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803271920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:27:19,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:27:19,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:27:19,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10969686] [2021-11-03 05:27:19,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:27:19,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:27:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:27:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:27:19,011 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-03 05:27:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:19,537 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2021-11-03 05:27:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:27:19,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 [2021-11-03 05:27:19,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:19,539 INFO L225 Difference]: With dead ends: 87 [2021-11-03 05:27:19,539 INFO L226 Difference]: Without dead ends: 77 [2021-11-03 05:27:19,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:27:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-03 05:27:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-11-03 05:27:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 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) [2021-11-03 05:27:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 106 transitions. [2021-11-03 05:27:19,552 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 106 transitions. Word has length 17 [2021-11-03 05:27:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:19,552 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 106 transitions. [2021-11-03 05:27:19,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-03 05:27:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 106 transitions. [2021-11-03 05:27:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:27:19,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:19,554 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:27:19,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:19,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:27:19,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:27:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1524987734, now seen corresponding path program 1 times [2021-11-03 05:27:19,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:27:19,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769365444] [2021-11-03 05:27:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:19,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:27:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:27:19,767 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:27:19,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:27:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:27:20,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:20,089 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 [2021-11-03 05:27:20,105 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 [2021-11-03 05:27:20,204 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:27:20,204 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 18 treesize of output 18 [2021-11-03 05:27:20,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:27:20,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:27:20,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:20,251 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 05:27:20,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-03 05:27:20,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:27:20,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 05:27:20,498 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-03 05:27:20,498 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 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-03 05:27:20,678 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 38 treesize of output 22 [2021-11-03 05:27:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:27:20,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:20,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:20,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:20,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:22,863 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:27:23,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:23,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 05:27:23,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:23,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-03 05:27:25,348 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_26 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_33 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_41 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_36 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_52 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_26 (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_33)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_42)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_33 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_33) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_52) v_DerPreprocessor_41) v_ULTIMATE.start_main_~p~0.offset_52 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_36) v_DerPreprocessor_40))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) v_ULTIMATE.start_main_~x~0_26))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_26 (_ bv20 32)))) is different from false [2021-11-03 05:27:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-03 05:27:25,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:27:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769365444] [2021-11-03 05:27:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769365444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981826704] [2021-11-03 05:27:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:25,922 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:27:25,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:27:25,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:27:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:27:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:26,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:27:26,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:26,323 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 [2021-11-03 05:27:26,336 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 [2021-11-03 05:27:26,438 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:27:26,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-03 05:27:26,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:27:26,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:27:26,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:26,493 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 05:27:26,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-03 05:27:26,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:27:26,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 05:27:26,700 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-03 05:27:26,701 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 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-03 05:27:26,825 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 38 treesize of output 22 [2021-11-03 05:27:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:27:26,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:26,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:26,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:26,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:27:28,934 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:27:29,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:29,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 05:27:29,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:29,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-03 05:27:31,361 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_50 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_42 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_31 (_ BitVec 32))) (or (bvsgt v_ULTIMATE.start_main_~x~0_31 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_31 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_50)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_38 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_38) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_56) v_DerPreprocessor_49) v_ULTIMATE.start_main_~p~0.offset_56 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_42) v_DerPreprocessor_48))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) v_ULTIMATE.start_main_~x~0_31))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_38)))))))) is different from false [2021-11-03 05:27:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-03 05:27:31,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1981826704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:31,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236499695] [2021-11-03 05:27:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:31,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:27:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:27:31,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:27:31,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 05:27:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:32,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:27:32,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:32,200 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 [2021-11-03 05:27:32,211 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 [2021-11-03 05:27:32,314 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:27:32,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-03 05:27:32,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:32,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:27:32,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:32,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:27:32,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:32,373 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 05:27:32,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-03 05:27:32,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:32,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 05:27:32,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:32,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 05:27:32,791 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:27:32,792 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 3 case distinctions, treesize of input 78 treesize of output 70 [2021-11-03 05:27:32,830 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 05:27:32,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 44 [2021-11-03 05:27:32,963 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 29 treesize of output 17 [2021-11-03 05:27:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:27:32,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:33,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:33,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:27:33,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:33,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:27:35,068 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) is different from false [2021-11-03 05:27:35,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:35,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-03 05:27:35,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:35,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 05:27:37,461 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_43 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_36 (_ BitVec 32)) (v_DerPreprocessor_57 (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_60 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_59)))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_58)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_43 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_60) v_DerPreprocessor_57) v_ULTIMATE.start_main_~p~0.offset_60 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_48) v_DerPreprocessor_56))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 v_ULTIMATE.start_main_~x~0_36))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:27:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-03 05:27:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236499695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:37,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:27:37,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-03 05:27:37,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038682343] [2021-11-03 05:27:37,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:27:37,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:27:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:27:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=150, Total=306 [2021-11-03 05:27:37,810 INFO L87 Difference]: Start difference. First operand 75 states and 106 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-03 05:27:40,208 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-11-03 05:27:42,267 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59))))))) is different from false [2021-11-03 05:27:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:27:42,977 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2021-11-03 05:27:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 05:27:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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 [2021-11-03 05:27:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:27:42,980 INFO L225 Difference]: With dead ends: 155 [2021-11-03 05:27:42,980 INFO L226 Difference]: Without dead ends: 146 [2021-11-03 05:27:42,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=133, Invalid=271, Unknown=8, NotChecked=344, Total=756 [2021-11-03 05:27:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-03 05:27:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 73. [2021-11-03 05:27:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 72 states have internal predecessors, (102), 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) [2021-11-03 05:27:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2021-11-03 05:27:43,001 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 17 [2021-11-03 05:27:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:27:43,001 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2021-11-03 05:27:43,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-03 05:27:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2021-11-03 05:27:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 05:27:43,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:27:43,004 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:27:43,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:43,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:43,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:27:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:27:43,614 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:27:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:27:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -668283619, now seen corresponding path program 1 times [2021-11-03 05:27:43,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:27:43,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206583237] [2021-11-03 05:27:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:43,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:27:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:27:43,615 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:27:43,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:27:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:43,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 05:27:43,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:43,939 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 [2021-11-03 05:27:44,157 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-03 05:27:44,157 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 2 case distinctions, treesize of input 115 treesize of output 93 [2021-11-03 05:27:44,167 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 114 treesize of output 110 [2021-11-03 05:27:44,237 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-11-03 05:27:44,237 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 2 case distinctions, treesize of input 117 treesize of output 83 [2021-11-03 05:27:44,251 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-03 05:27:44,252 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 104 treesize of output 104 [2021-11-03 05:27:44,641 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-03 05:27:44,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 110 [2021-11-03 05:27:44,673 INFO L354 Elim1Store]: treesize reduction 87, result has 17.9 percent of original size [2021-11-03 05:27:44,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 104 [2021-11-03 05:27:44,716 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-03 05:27:44,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-11-03 05:27:44,767 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-03 05:27:44,767 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 66 [2021-11-03 05:27:44,773 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-03 05:27:44,773 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 32 [2021-11-03 05:27:44,837 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 38 treesize of output 22 [2021-11-03 05:27:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:27:44,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:27:44,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:44,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:27:44,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:44,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:27:45,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:45,290 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 351 treesize of output 350 [2021-11-03 05:27:45,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:45,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-11-03 05:27:47,888 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-03 05:27:47,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 540 treesize of output 358 [2021-11-03 05:27:47,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:47,982 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 350 treesize of output 356 [2021-11-03 05:27:48,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:48,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 546 [2021-11-03 05:27:49,893 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-03 05:27:49,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 364 [2021-11-03 05:27:49,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:49,952 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 356 treesize of output 362 [2021-11-03 05:27:49,968 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:27:50,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:50,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:50,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:50,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:51,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:51,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-11-03 05:27:51,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:51,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:51,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-11-03 05:27:51,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:52,778 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-03 05:27:52,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:52,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:27:57,188 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:57,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 110 treesize of output 122 [2021-11-03 05:27:58,177 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:27:58,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 167 [2021-11-03 05:27:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:27:59,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:27:59,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206583237] [2021-11-03 05:27:59,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206583237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:27:59,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433057095] [2021-11-03 05:27:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:27:59,117 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:27:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:27:59,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:27:59,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 05:27:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:27:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:27:59,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:27:59,566 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 [2021-11-03 05:27:59,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:27:59,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:59,773 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-03 05:27:59,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 89 [2021-11-03 05:27:59,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:27:59,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:27:59,805 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-03 05:27:59,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 67 [2021-11-03 05:27:59,814 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 88 treesize of output 78 [2021-11-03 05:27:59,835 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-03 05:27:59,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 85 [2021-11-03 05:28:00,410 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:28:00,410 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 109 treesize of output 100 [2021-11-03 05:28:00,442 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-11-03 05:28:00,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-03 05:28:00,452 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:28:00,452 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2021-11-03 05:28:00,497 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:28:00,498 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2021-11-03 05:28:00,504 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:28:00,504 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 42 treesize of output 30 [2021-11-03 05:28:00,596 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 38 treesize of output 22 [2021-11-03 05:28:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:00,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:00,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:00,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:28:00,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:00,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:28:00,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:00,926 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 654 treesize of output 623 [2021-11-03 05:28:00,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:00,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1049 [2021-11-03 05:28:01,127 INFO L354 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2021-11-03 05:28:01,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1049 treesize of output 622 [2021-11-03 05:28:01,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:01,234 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 614 treesize of output 604 [2021-11-03 05:28:01,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:01,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1030 [2021-11-03 05:28:01,441 INFO L354 Elim1Store]: treesize reduction 51, result has 48.5 percent of original size [2021-11-03 05:28:01,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1030 treesize of output 612 [2021-11-03 05:28:01,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:01,532 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 604 treesize of output 594 [2021-11-03 05:28:01,554 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:28:01,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:01,997 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 31 treesize of output 35 [2021-11-03 05:28:02,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:02,487 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:02,488 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 23 [2021-11-03 05:28:02,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:03,291 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:03,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 541 treesize of output 525 [2021-11-03 05:28:03,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:03,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 655 treesize of output 643 [2021-11-03 05:28:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433057095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:28:07,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464586546] [2021-11-03 05:28:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:07,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:28:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:28:07,787 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:28:07,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 05:28:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:08,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:28:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:08,189 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 [2021-11-03 05:28:08,375 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-03 05:28:08,376 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 2 case distinctions, treesize of input 116 treesize of output 94 [2021-11-03 05:28:08,381 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 127 treesize of output 117 [2021-11-03 05:28:08,431 INFO L354 Elim1Store]: treesize reduction 150, result has 14.3 percent of original size [2021-11-03 05:28:08,431 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 2 case distinctions, treesize of input 124 treesize of output 90 [2021-11-03 05:28:08,446 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-03 05:28:08,446 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 105 treesize of output 105 [2021-11-03 05:28:08,979 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-11-03 05:28:08,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 105 [2021-11-03 05:28:09,019 INFO L354 Elim1Store]: treesize reduction 65, result has 16.7 percent of original size [2021-11-03 05:28:09,020 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 83 [2021-11-03 05:28:09,057 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-11-03 05:28:09,058 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 72 [2021-11-03 05:28:09,125 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-03 05:28:09,126 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 58 [2021-11-03 05:28:09,135 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:28:09,136 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-11-03 05:28:09,171 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 38 treesize of output 22 [2021-11-03 05:28:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:09,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:09,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:09,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:28:09,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:09,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:28:09,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:09,524 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 349 treesize of output 348 [2021-11-03 05:28:09,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:09,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-11-03 05:28:11,536 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-03 05:28:11,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-11-03 05:28:11,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:11,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-11-03 05:28:16,117 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-03 05:28:16,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-11-03 05:28:16,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:16,207 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 348 treesize of output 354 [2021-11-03 05:28:16,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:16,297 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 354 treesize of output 360 [2021-11-03 05:28:16,317 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:28:16,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:16,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:16,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:16,906 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 38 treesize of output 42 [2021-11-03 05:28:17,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:17,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:17,433 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 21 treesize of output 25 [2021-11-03 05:28:17,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:19,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-03 05:28:28,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:28,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 192 treesize of output 196 [2021-11-03 05:28:29,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:29,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 219 treesize of output 227 [2021-11-03 05:28:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:30,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464586546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:28:30,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:28:30,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 19 [2021-11-03 05:28:30,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606866589] [2021-11-03 05:28:30,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 05:28:30,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:30,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 05:28:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=282, Unknown=1, NotChecked=0, Total=342 [2021-11-03 05:28:30,882 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 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) [2021-11-03 05:28:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:34,056 INFO L93 Difference]: Finished difference Result 133 states and 185 transitions. [2021-11-03 05:28:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:28:34,058 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 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 [2021-11-03 05:28:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:34,059 INFO L225 Difference]: With dead ends: 133 [2021-11-03 05:28:34,059 INFO L226 Difference]: Without dead ends: 115 [2021-11-03 05:28:34,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=122, Invalid=579, Unknown=1, NotChecked=0, Total=702 [2021-11-03 05:28:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-03 05:28:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2021-11-03 05:28:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4) internal successors, (126), 90 states have internal predecessors, (126), 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) [2021-11-03 05:28:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 126 transitions. [2021-11-03 05:28:34,072 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 126 transitions. Word has length 18 [2021-11-03 05:28:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:34,073 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 126 transitions. [2021-11-03 05:28:34,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 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) [2021-11-03 05:28:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 126 transitions. [2021-11-03 05:28:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 05:28:34,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:34,074 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:34,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:34,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:34,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-03 05:28:34,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:28:34,689 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:28:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash -776135564, now seen corresponding path program 3 times [2021-11-03 05:28:34,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:34,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199800763] [2021-11-03 05:28:34,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:28:34,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:34,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:34,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:34,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:28:35,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-03 05:28:35,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:28:35,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 05:28:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:35,161 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 [2021-11-03 05:28:35,168 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 [2021-11-03 05:28:35,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:28:35,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:28:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:28:35,413 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-03 05:28:35,413 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 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-03 05:28:35,494 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:28:35,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-03 05:28:35,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 05:28:35,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-03 05:28:35,829 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:28:35,829 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 3 case distinctions, treesize of input 83 treesize of output 75 [2021-11-03 05:28:35,867 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 05:28:35,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 47 treesize of output 49 [2021-11-03 05:28:35,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:28:35,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:35,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-03 05:28:36,129 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-03 05:28:36,130 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 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-03 05:28:36,284 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 38 treesize of output 22 [2021-11-03 05:28:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:36,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:36,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:36,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:28:36,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:36,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:28:38,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-11-03 05:28:38,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:38,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 05:28:38,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:38,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-03 05:28:40,770 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_80)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_58))))))) is different from false [2021-11-03 05:28:41,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:41,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:28:41,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:41,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-11-03 05:28:43,971 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (v_DerPreprocessor_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_48 (_ BitVec 32)) (v_DerPreprocessor_80 (_ BitVec 32)) (v_DerPreprocessor_81 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_59 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_66 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_82)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_59 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_80) v_DerPreprocessor_81) v_ULTIMATE.start_main_~p~0.offset_80 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_66) v_DerPreprocessor_80))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 v_ULTIMATE.start_main_~x~0_48) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_58)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59)))))) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)))) is different from false [2021-11-03 05:28:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 05:28:45,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:45,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199800763] [2021-11-03 05:28:45,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199800763] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:28:45,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817791395] [2021-11-03 05:28:45,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:28:45,340 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:28:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:28:45,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:28:45,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:28:45,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:28:45,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298131661] [2021-11-03 05:28:45,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:28:45,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:28:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:28:45,941 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:28:45,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 1 [2021-11-03 05:28:45,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 05:28:47,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-03 05:28:47,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:28:47,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 05:28:47,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:47,500 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 [2021-11-03 05:28:47,522 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 [2021-11-03 05:28:47,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:47,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:28:47,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:47,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:28:47,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:28:47,768 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-03 05:28:47,768 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 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-03 05:28:47,831 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:28:47,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-03 05:28:47,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:47,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 05:28:47,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:47,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 05:28:48,077 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:28:48,078 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 3 case distinctions, treesize of input 90 treesize of output 82 [2021-11-03 05:28:48,134 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-03 05:28:48,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 54 treesize of output 71 [2021-11-03 05:28:48,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:48,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 05:28:48,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:48,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-03 05:28:48,649 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:28:48,649 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 3 case distinctions, treesize of input 117 treesize of output 109 [2021-11-03 05:28:48,693 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-03 05:28:48,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 85 [2021-11-03 05:28:48,809 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 29 treesize of output 17 [2021-11-03 05:28:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:48,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:48,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:48,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:28:48,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:48,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:28:50,901 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:28:50,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:50,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-03 05:28:50,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:50,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-03 05:28:53,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_92)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83)))))))) is different from false [2021-11-03 05:28:53,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:53,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-11-03 05:28:53,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:28:53,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-03 05:28:56,151 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_54 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_85 (_ BitVec 32)) (v_DerPreprocessor_93 (_ BitVec 32)) (v_DerPreprocessor_94 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_66 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_75 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (let ((.cse3 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66 (_ bv1 1)))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_94)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_66 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_66) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_85) v_DerPreprocessor_93) v_ULTIMATE.start_main_~p~0.offset_85 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_75) v_DerPreprocessor_92))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 v_ULTIMATE.start_main_~x~0_54) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse3 v_ULTIMATE.start_main_~tail~0.base_65)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse3 v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83))))))))))) is different from false [2021-11-03 05:28:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 05:28:57,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298131661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:28:57,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:28:57,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-11-03 05:28:57,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603700467] [2021-11-03 05:28:57,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 05:28:57,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 05:28:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-11-03 05:28:57,548 INFO L87 Difference]: Start difference. First operand 91 states and 126 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-11-03 05:29:04,753 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse3 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse3)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse3))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse5 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse4 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse4 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse5 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse5) (bvneg (bvneg .cse4))))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-11-03 05:29:06,850 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse2 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse2)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse2))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse4 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse3 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse4) (bvneg (bvneg .cse3)))))))) is different from false [2021-11-03 05:29:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:08,826 INFO L93 Difference]: Finished difference Result 192 states and 269 transitions. [2021-11-03 05:29:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:29:08,828 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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 [2021-11-03 05:29:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:08,830 INFO L225 Difference]: With dead ends: 192 [2021-11-03 05:29:08,830 INFO L226 Difference]: Without dead ends: 183 [2021-11-03 05:29:08,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-11-03 05:29:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-03 05:29:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 96. [2021-11-03 05:29:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 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) [2021-11-03 05:29:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2021-11-03 05:29:08,845 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 18 [2021-11-03 05:29:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:08,845 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2021-11-03 05:29:08,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-11-03 05:29:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2021-11-03 05:29:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 05:29:08,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:08,847 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:08,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-03 05:29:09,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:09,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:29:09,261 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:29:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1147499445, now seen corresponding path program 1 times [2021-11-03 05:29:09,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:09,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535362933] [2021-11-03 05:29:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:09,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:09,263 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:09,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:29:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 05:29:09,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:09,960 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 40 treesize of output 20 [2021-11-03 05:29:10,625 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 38 treesize of output 26 [2021-11-03 05:29:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:10,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:12,351 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:29:12,351 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 49 treesize of output 33 [2021-11-03 05:29:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:12,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:12,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535362933] [2021-11-03 05:29:12,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535362933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:12,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [141874510] [2021-11-03 05:29:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:12,409 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:29:12,410 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:29:12,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:29:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:13,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:29:13,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:14,093 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 40 treesize of output 20 [2021-11-03 05:29:15,349 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 38 treesize of output 26 [2021-11-03 05:29:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:15,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:15,732 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:29:15,733 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 49 treesize of output 33 [2021-11-03 05:29:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:15,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [141874510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:15,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917542717] [2021-11-03 05:29:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:15,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:29:15,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:29:15,808 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:29:15,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 05:29:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:16,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 05:29:16,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:16,668 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 40 treesize of output 20 [2021-11-03 05:29:17,324 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 38 treesize of output 26 [2021-11-03 05:29:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:17,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:17,690 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:29:17,690 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 49 treesize of output 33 [2021-11-03 05:29:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:17,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917542717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:17,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:29:17,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11, 9, 10, 9] total 23 [2021-11-03 05:29:17,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570515930] [2021-11-03 05:29:17,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 05:29:17,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 05:29:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:29:17,742 INFO L87 Difference]: Start difference. First operand 96 states and 135 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2021-11-03 05:29:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:26,451 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2021-11-03 05:29:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:29:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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 [2021-11-03 05:29:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:26,459 INFO L225 Difference]: With dead ends: 195 [2021-11-03 05:29:26,459 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 05:29:26,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 05:29:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 05:29:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 113. [2021-11-03 05:29:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 112 states have internal predecessors, (162), 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) [2021-11-03 05:29:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 162 transitions. [2021-11-03 05:29:26,474 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 162 transitions. Word has length 20 [2021-11-03 05:29:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:26,474 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 162 transitions. [2021-11-03 05:29:26,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2021-11-03 05:29:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 162 transitions. [2021-11-03 05:29:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 05:29:26,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:26,476 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:26,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:26,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:26,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:27,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:29:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1494005967, now seen corresponding path program 2 times [2021-11-03 05:29:27,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:27,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261696356] [2021-11-03 05:29:27,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:27,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:27,106 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:27,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 05:29:27,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:29:27,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:29:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 05:29:27,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:27,688 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 [2021-11-03 05:29:27,695 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 [2021-11-03 05:29:27,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:27,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:29:27,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:27,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:29:27,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:29:27,995 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-03 05:29:27,996 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 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-03 05:29:28,056 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:29:28,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-03 05:29:28,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:28,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-03 05:29:28,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:28,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 05:29:28,323 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:29:28,324 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 3 case distinctions, treesize of input 89 treesize of output 81 [2021-11-03 05:29:28,354 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 05:29:28,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 53 treesize of output 55 [2021-11-03 05:29:28,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:28,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-03 05:29:28,551 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-03 05:29:28,552 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 2 case distinctions, treesize of input 66 treesize of output 51 [2021-11-03 05:29:28,634 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-11-03 05:29:28,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-03 05:29:28,804 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 38 treesize of output 22 [2021-11-03 05:29:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:28,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:28,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:28,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:29:28,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:28,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:29:30,968 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:29:31,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:31,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 05:29:31,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:31,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-03 05:29:33,381 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_103)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_72)))))))) is different from false [2021-11-03 05:29:33,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:33,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:29:33,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:33,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-11-03 05:29:36,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_100 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (v_DerPreprocessor_104 (_ BitVec 32)) (v_DerPreprocessor_105 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_61 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_73 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_105)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_73 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_73) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_99) v_DerPreprocessor_104) v_ULTIMATE.start_main_~p~0.offset_99 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_84) v_DerPreprocessor_103))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 v_ULTIMATE.start_main_~x~0_61) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_72))))))) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73))))))) is different from false [2021-11-03 05:29:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-03 05:29:38,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:38,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261696356] [2021-11-03 05:29:38,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261696356] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:38,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [980236330] [2021-11-03 05:29:38,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:38,145 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:38,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:29:38,146 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:29:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-03 05:29:38,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:29:38,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36927312] [2021-11-03 05:29:38,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:38,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:29:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:29:38,852 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:29:38,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 1 [2021-11-03 05:29:38,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-03 05:29:39,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:29:39,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:29:39,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 05:29:39,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:39,493 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 [2021-11-03 05:29:39,500 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 [2021-11-03 05:29:39,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:39,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 05:29:39,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:39,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:29:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:29:39,754 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-03 05:29:39,754 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 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-03 05:29:39,811 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:29:39,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-03 05:29:39,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:39,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-03 05:29:39,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:39,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 05:29:40,066 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:29:40,066 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 3 case distinctions, treesize of input 94 treesize of output 86 [2021-11-03 05:29:40,125 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-03 05:29:40,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 58 treesize of output 75 [2021-11-03 05:29:40,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:40,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 05:29:40,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:40,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 05:29:40,739 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-03 05:29:40,739 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 3 case distinctions, treesize of input 116 treesize of output 108 [2021-11-03 05:29:40,786 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-03 05:29:40,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 84 [2021-11-03 05:29:40,907 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 29 treesize of output 17 [2021-11-03 05:29:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:29:40,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:40,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:40,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:29:40,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:40,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 05:29:43,001 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))) is different from false [2021-11-03 05:29:43,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:43,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:29:43,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:43,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 05:29:45,353 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79)))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_115)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-11-03 05:29:45,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:45,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:29:45,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:29:45,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-03 05:29:48,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_104 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (v_DerPreprocessor_116 (_ BitVec 32)) (v_DerPreprocessor_117 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_93 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_68 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_80 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80 (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 v_ULTIMATE.start_main_~tail~0.base_79)))))) (bvsge (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_117)))) (store .cse3 v_ULTIMATE.start_main_~tail~0.base_80 (store (store (store (select .cse3 v_ULTIMATE.start_main_~tail~0.base_80) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_104) v_DerPreprocessor_116) v_ULTIMATE.start_main_~p~0.offset_104 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_93) v_DerPreprocessor_115))))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 v_ULTIMATE.start_main_~x~0_68) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-11-03 05:29:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-03 05:29:49,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36927312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:49,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:29:49,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-11-03 05:29:49,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173509414] [2021-11-03 05:29:49,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 05:29:49,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 05:29:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-11-03 05:29:49,671 INFO L87 Difference]: Start difference. First operand 113 states and 162 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-11-03 05:29:59,083 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-11-03 05:30:01,194 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102))))))) is different from false [2021-11-03 05:30:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:30:02,870 INFO L93 Difference]: Finished difference Result 236 states and 334 transitions. [2021-11-03 05:30:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:30:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 [2021-11-03 05:30:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:30:02,872 INFO L225 Difference]: With dead ends: 236 [2021-11-03 05:30:02,872 INFO L226 Difference]: Without dead ends: 204 [2021-11-03 05:30:02,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-11-03 05:30:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-03 05:30:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 105. [2021-11-03 05:30:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 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) [2021-11-03 05:30:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-11-03 05:30:02,886 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 20 [2021-11-03 05:30:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:30:02,886 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-11-03 05:30:02,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-11-03 05:30:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2021-11-03 05:30:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 05:30:02,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:30:02,889 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:30:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:03,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-03 05:30:03,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:30:03,292 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:30:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:30:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 232192162, now seen corresponding path program 2 times [2021-11-03 05:30:03,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:30:03,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544644715] [2021-11-03 05:30:03,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:30:03,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:30:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:30:03,295 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:30:03,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-03 05:30:03,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:30:03,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:30:03,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-03 05:30:03,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:03,963 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 [2021-11-03 05:30:04,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:30:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:04,055 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-03 05:30:04,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2021-11-03 05:30:04,107 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:30:04,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-03 05:30:04,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-03 05:30:04,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:04,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-11-03 05:30:05,315 INFO L354 Elim1Store]: treesize reduction 307, result has 10.0 percent of original size [2021-11-03 05:30:05,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 371 treesize of output 241 [2021-11-03 05:30:05,562 INFO L354 Elim1Store]: treesize reduction 323, result has 9.0 percent of original size [2021-11-03 05:30:05,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 463 treesize of output 317 [2021-11-03 05:30:05,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:05,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 343 [2021-11-03 05:30:05,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:05,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-03 05:30:05,688 INFO L354 Elim1Store]: treesize reduction 955, result has 8.3 percent of original size [2021-11-03 05:30:05,688 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 3 case distinctions, treesize of input 350 treesize of output 302 [2021-11-03 05:30:05,723 INFO L354 Elim1Store]: treesize reduction 22, result has 69.9 percent of original size [2021-11-03 05:30:05,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 206 treesize of output 226 [2021-11-03 05:30:05,725 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:30:06,484 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-11-03 05:30:06,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 184 [2021-11-03 05:30:06,551 INFO L354 Elim1Store]: treesize reduction 122, result has 14.7 percent of original size [2021-11-03 05:30:06,552 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 125 [2021-11-03 05:30:06,606 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-03 05:30:06,608 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 169 treesize of output 130 [2021-11-03 05:30:06,734 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-03 05:30:06,734 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-11-03 05:30:06,750 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-03 05:30:06,750 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-11-03 05:30:06,823 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 38 treesize of output 22 [2021-11-03 05:30:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:30:06,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:06,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:06,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:30:06,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:06,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:30:07,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:07,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-03 05:30:07,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:07,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-03 05:30:07,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:07,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-11-03 05:30:07,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:07,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 05:30:09,595 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_122 (_ BitVec 32)) (v_DerPreprocessor_123 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_125 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_109 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_109 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_109)))) (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_109)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_123)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_109) .cse3 v_DerPreprocessor_122) v_ULTIMATE.start_main_~p~0.offset_109 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_109)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_124))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_109)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_125))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)))) is different from false [2021-11-03 05:30:11,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:11,003 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 9061376 treesize of output 8954967 [2021-11-03 05:30:36,878 WARN L207 SmtUtils]: Spent 25.87 s on a formula simplification that was a NOOP. DAG size: 1092 [2021-11-03 05:31:02,968 WARN L207 SmtUtils]: Spent 26.02 s on a formula simplification that was a NOOP. DAG size: 1096 [2021-11-03 05:31:02,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:31:28,939 WARN L207 SmtUtils]: Spent 25.97 s on a formula simplification that was a NOOP. DAG size: 1060 [2021-11-03 05:31:54,774 WARN L207 SmtUtils]: Spent 25.83 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-11-03 05:31:54,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10658812 [2021-11-03 05:32:20,527 WARN L207 SmtUtils]: Spent 25.69 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-11-03 05:32:26,002 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-11-03 05:32:26,003 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-11-03 05:32:26,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 10658812 treesize of output 8004770 [2021-11-03 05:32:51,805 WARN L207 SmtUtils]: Spent 25.80 s on a formula simplification that was a NOOP. DAG size: 1110 [2021-11-03 05:33:17,778 WARN L207 SmtUtils]: Spent 25.97 s on a formula simplification that was a NOOP. DAG size: 1099 [2021-11-03 05:33:19,104 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-11-03 05:33:19,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 9883002 treesize of output 8878380 [2021-11-03 05:33:45,132 WARN L207 SmtUtils]: Spent 26.03 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-11-03 05:34:11,115 WARN L207 SmtUtils]: Spent 25.98 s on a formula simplification that was a NOOP. DAG size: 1114 [2021-11-03 05:34:37,342 WARN L207 SmtUtils]: Spent 26.12 s on a formula simplification that was a NOOP. DAG size: 1118 [2021-11-03 05:34:37,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:03,333 WARN L207 SmtUtils]: Spent 25.99 s on a formula simplification that was a NOOP. DAG size: 1052 [2021-11-03 05:35:29,522 WARN L207 SmtUtils]: Spent 26.18 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-11-03 05:35:29,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10582223 [2021-11-03 05:35:55,614 WARN L207 SmtUtils]: Spent 26.03 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-11-03 05:36:00,423 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-11-03 05:36:00,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 10582223 treesize of output 7797110 [2021-11-03 05:36:26,474 WARN L207 SmtUtils]: Spent 26.05 s on a formula simplification that was a NOOP. DAG size: 1116 [2021-11-03 05:36:52,825 WARN L207 SmtUtils]: Spent 26.34 s on a formula simplification that was a NOOP. DAG size: 1105 [2021-11-03 05:36:53,124 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-11-03 05:36:53,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9413208 treesize of output 8539650 [2021-11-03 05:37:19,622 WARN L207 SmtUtils]: Spent 26.50 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-11-03 05:37:19,623 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:37:20,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:20,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544644715] [2021-11-03 05:37:20,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:37:20,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [495468516] [2021-11-03 05:37:20,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:37:20,589 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:37:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:37:20,593 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:37:20,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-03 05:37:21,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:37:21,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:37:21,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 05:37:21,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:21,649 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 [2021-11-03 05:37:21,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:21,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:21,744 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:37:21,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-11-03 05:37:21,789 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:37:21,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-03 05:37:21,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:21,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-11-03 05:37:21,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-03 05:37:22,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:22,553 INFO L354 Elim1Store]: treesize reduction 202, result has 11.0 percent of original size [2021-11-03 05:37:22,553 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 368 treesize of output 238 [2021-11-03 05:37:22,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:22,710 INFO L354 Elim1Store]: treesize reduction 194, result has 10.6 percent of original size [2021-11-03 05:37:22,711 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 460 treesize of output 314 [2021-11-03 05:37:22,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:22,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-11-03 05:37:22,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:22,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-11-03 05:37:22,776 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-11-03 05:37:22,776 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 2 case distinctions, treesize of input 222 treesize of output 188 [2021-11-03 05:37:22,809 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-11-03 05:37:22,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 148 treesize of output 160 [2021-11-03 05:37:22,814 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:37:23,535 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-03 05:37:23,536 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 3 case distinctions, treesize of input 148 treesize of output 142 [2021-11-03 05:37:23,564 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-11-03 05:37:23,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 120 [2021-11-03 05:37:23,571 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-03 05:37:23,571 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 76 [2021-11-03 05:37:23,665 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-03 05:37:23,665 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 69 [2021-11-03 05:37:23,672 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-03 05:37:23,672 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 57 treesize of output 41 [2021-11-03 05:37:23,794 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 42 treesize of output 26 [2021-11-03 05:37:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:23,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:24,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 05:37:24,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 05:37:24,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-03 05:37:24,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-03 05:37:24,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-03 05:37:24,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:24,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-03 05:37:29,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_132 (_ BitVec 32)) (v_DerPreprocessor_133 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_134 (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (v_DerPreprocessor_130 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_114 (_ BitVec 32)) (v_DerPreprocessor_131 (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (select (store (select (let ((.cse8 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_ULTIMATE.start_main_~p~0.base_114)))) (store .cse8 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse8 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_134))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_130) .cse7)) (.cse1 (select (store (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse5 (_ bv0 32))))) (store .cse6 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse6 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_135))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_131) .cse7))) (or (and (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32))) (bvsge (select (select (let ((.cse2 (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_DerPreprocessor_133)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) v_DerPreprocessor_132) (_ bv0 32) ULTIMATE.start_main_~x~0))))) (store .cse2 c_ULTIMATE.start_main_~list~0.base (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~list~0.base))) (store .cse3 c_ULTIMATE.start_main_~list~0.offset (bvadd (_ bv1 32) (select .cse3 c_ULTIMATE.start_main_~list~0.offset)))))) .cse0) .cse1) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_114)))))))) is different from false [2021-11-03 05:37:35,598 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:35,599 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 351122 treesize of output 346725 [2021-11-03 05:37:37,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:39,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 453182 [2021-11-03 05:37:41,953 INFO L354 Elim1Store]: treesize reduction 243, result has 25.7 percent of original size [2021-11-03 05:37:41,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 453182 treesize of output 291473 [2021-11-03 05:37:44,776 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-11-03 05:37:44,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 362217 treesize of output 322777 [2021-11-03 05:37:47,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:49,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429232 [2021-11-03 05:37:50,480 INFO L354 Elim1Store]: treesize reduction 289, result has 19.9 percent of original size [2021-11-03 05:37:50,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 429232 treesize of output 259319 [2021-11-03 05:37:52,542 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-11-03 05:37:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 259301 treesize of output 255241 [2021-11-03 05:37:53,449 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:37:53,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:37:53,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733228470] [2021-11-03 05:37:53,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:37:53,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:37:53,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:53,727 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:37:53,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-03 05:37:54,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:37:54,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:37:54,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-03 05:37:54,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:54,498 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 [2021-11-03 05:37:54,575 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 20 treesize of output 16 [2021-11-03 05:37:54,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:54,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:54,618 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:37:54,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-11-03 05:37:54,665 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:37:54,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-03 05:37:54,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:54,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-11-03 05:37:54,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:55,651 INFO L354 Elim1Store]: treesize reduction 209, result has 11.1 percent of original size [2021-11-03 05:37:55,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 293 treesize of output 179 [2021-11-03 05:37:55,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:55,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-11-03 05:37:55,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:55,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 292 [2021-11-03 05:37:55,809 INFO L354 Elim1Store]: treesize reduction 332, result has 12.2 percent of original size [2021-11-03 05:37:55,809 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 3 case distinctions, treesize of input 292 treesize of output 258 [2021-11-03 05:37:55,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:55,905 INFO L354 Elim1Store]: treesize reduction 429, result has 8.9 percent of original size [2021-11-03 05:37:55,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 216 treesize of output 151 [2021-11-03 05:37:55,940 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-11-03 05:37:55,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 152 treesize of output 164 [2021-11-03 05:37:55,941 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:37:56,666 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-03 05:37:56,666 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 201 treesize of output 162 [2021-11-03 05:37:56,710 INFO L354 Elim1Store]: treesize reduction 61, result has 10.3 percent of original size [2021-11-03 05:37:56,710 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 6 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 101 [2021-11-03 05:37:56,740 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-11-03 05:37:56,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 114 [2021-11-03 05:37:56,872 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-03 05:37:56,872 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-11-03 05:37:56,882 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-03 05:37:56,882 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-11-03 05:37:56,931 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 38 treesize of output 22 [2021-11-03 05:37:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:56,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:56,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:56,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:37:56,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:56,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:37:57,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:57,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-03 05:37:57,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:57,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-03 05:37:57,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:57,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-11-03 05:37:57,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:37:57,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 05:37:59,627 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_143 (_ BitVec 32)) (v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_144 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_145 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_119 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_119 (_ BitVec 32)) (v_DerPreprocessor_142 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_119)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_143)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_119) .cse3 v_DerPreprocessor_142) v_ULTIMATE.start_main_~p~0.offset_119 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_119)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_144))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_119)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_145))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_119)))))) is different from false [2021-11-03 05:38:00,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:38:00,991 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 70764 treesize of output 70019 [2021-11-03 05:38:01,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:38:01,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83240 [2021-11-03 05:38:06,510 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-11-03 05:38:06,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 83240 treesize of output 62670 [2021-11-03 05:38:08,076 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-11-03 05:38:08,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 77598 treesize of output 69652 [2021-11-03 05:38:08,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:38:09,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82871 [2021-11-03 05:38:13,017 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-11-03 05:38:13,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 82871 treesize of output 61278 [2021-11-03 05:38:13,679 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-11-03 05:38:13,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74168 treesize of output 67238 [2021-11-03 05:38:13,914 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:38:14,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:38:14,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:14,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:38:14,011 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:38:14,011 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:38:14,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:38:14,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-03 05:38:14,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:14,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-11-03 05:38:14,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:38:14,624 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2021-11-03 05:38:14,626 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:38:14,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:38:14 BoogieIcfgContainer [2021-11-03 05:38:14,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:38:14,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:38:14,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:38:14,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:38:14,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:26:45" (3/4) ... [2021-11-03 05:38:14,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:38:14,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:38:14,652 INFO L168 Benchmark]: Toolchain (without parser) took 690767.41 ms. Allocated memory was 77.6 MB in the beginning and 639.6 MB in the end (delta: 562.0 MB). Free memory was 59.7 MB in the beginning and 347.1 MB in the end (delta: -287.4 MB). Peak memory consumption was 276.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,653 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:14,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.84 ms. Allocated memory is still 77.6 MB. Free memory was 59.6 MB in the beginning and 42.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.40 ms. Allocated memory is still 77.6 MB. Free memory was 42.5 MB in the beginning and 40.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,653 INFO L168 Benchmark]: Boogie Preprocessor took 63.37 ms. Allocated memory is still 77.6 MB. Free memory was 40.6 MB in the beginning and 38.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,653 INFO L168 Benchmark]: RCFGBuilder took 562.48 ms. Allocated memory is still 77.6 MB. Free memory was 38.9 MB in the beginning and 49.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,654 INFO L168 Benchmark]: TraceAbstraction took 689536.56 ms. Allocated memory was 77.6 MB in the beginning and 639.6 MB in the end (delta: 562.0 MB). Free memory was 49.2 MB in the beginning and 347.1 MB in the end (delta: -297.9 MB). Peak memory consumption was 408.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:14,656 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 639.6 MB. Free memory is still 347.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:14,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 530.84 ms. Allocated memory is still 77.6 MB. Free memory was 59.6 MB in the beginning and 42.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.40 ms. Allocated memory is still 77.6 MB. Free memory was 42.5 MB in the beginning and 40.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.37 ms. Allocated memory is still 77.6 MB. Free memory was 40.6 MB in the beginning and 38.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 562.48 ms. Allocated memory is still 77.6 MB. Free memory was 38.9 MB in the beginning and 49.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 689536.56 ms. Allocated memory was 77.6 MB in the beginning and 639.6 MB in the end (delta: 562.0 MB). Free memory was 49.2 MB in the beginning and 347.1 MB in the end (delta: -297.9 MB). Peak memory consumption was 408.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.98 ms. Allocated memory is still 639.6 MB. Free memory is still 347.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 589]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L573] Node *p, *list = malloc(sizeof(*list)); [L573] Node *p, *list = malloc(sizeof(*list)); [L574] Node *tail = list; [L575] list->next = ((void *)0) [L576] list->val = 10 [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND FALSE !(__VERIFIER_nondet_int()) [L586] COND TRUE 1 [L587] p = list [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND FALSE !(!(p->val <= 20 && p->val >= 10)) [L590] EXPR p->val [L590] COND TRUE p->val < 20 [L590] EXPR p->val [L590] p->val++ [L587] EXPR p->next [L587] p = p->next [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND TRUE !(p->val <= 20 && p->val >= 10) [L589] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 689.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 49.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 654 SDslu, 1120 SDs, 0 SdLazy, 1658 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 596 SyntacticMatches, 14 SemanticMatches, 221 ConstructedPredicates, 33 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 93.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=10, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 451 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 569.2s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 744 ConstructedInterpolants, 164 QuantifiedInterpolants, 20580 SizeOfPredicates, 315 NumberOfNonLiveVariables, 1828 ConjunctsInSsa, 432 ConjunctsInUnsatCore, 49 InterpolantComputations, 6 PerfectInterpolantSequences, 70/378 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 [2021-11-03 05:38:14,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335248f0-6d19-4651-8856-722875becea8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN