./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:58:47,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:58:47,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:58:47,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:58:47,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:58:47,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:58:47,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:58:47,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:58:47,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:58:47,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:58:47,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:58:47,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:58:47,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:58:47,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:58:47,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:58:47,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:58:47,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:58:47,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:58:47,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:58:47,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:58:47,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:58:47,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:58:47,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:58:47,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:58:47,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:58:47,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:58:47,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:58:47,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:58:47,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:58:47,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:58:47,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:58:47,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:58:47,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:58:47,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:58:47,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:58:47,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:58:47,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:58:47,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:58:47,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:58:47,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:58:47,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:58:47,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:58:47,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:58:47,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:58:47,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:58:47,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:58:47,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:58:47,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:58:47,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:58:47,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:58:47,848 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:58:47,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:58:47,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:58:47,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:58:47,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:58:47,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:58:47,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:58:47,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:58:47,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:58:47,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:58:47,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:58:47,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:58:47,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:58:47,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:58:47,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:58:47,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:58:47,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:58:47,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:58:47,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:58:47,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:58:47,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:58:47,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:58:47,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:58:47,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:58:47,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:58:47,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:58:47,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-11-20 05:58:48,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:58:48,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:58:48,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:58:48,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:58:48,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:58:48,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-20 05:58:48,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/data/998812567/a6b3785e80244c239f2aed9c4b0ba3e8/FLAGd42479738 [2021-11-20 05:58:48,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:58:48,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-20 05:58:48,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/data/998812567/a6b3785e80244c239f2aed9c4b0ba3e8/FLAGd42479738 [2021-11-20 05:58:49,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/data/998812567/a6b3785e80244c239f2aed9c4b0ba3e8 [2021-11-20 05:58:49,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:58:49,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:58:49,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:58:49,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:58:49,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:58:49,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b653c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49, skipping insertion in model container [2021-11-20 05:58:49,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:58:49,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:58:49,415 WARN L230 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_c589f752-8297-43f6-b65e-af8edcb4af4e/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-20 05:58:49,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:58:49,440 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:58:49,517 WARN L230 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_c589f752-8297-43f6-b65e-af8edcb4af4e/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-20 05:58:49,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:58:49,549 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:58:49,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49 WrapperNode [2021-11-20 05:58:49,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:58:49,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:58:49,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:58:49,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:58:49,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,604 INFO L137 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-20 05:58:49,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:58:49,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:58:49,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:58:49,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:58:49,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:58:49,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:58:49,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:58:49,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:58:49,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (1/1) ... [2021-11-20 05:58:49,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:58:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:49,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:58:49,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:58:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-20 05:58:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:58:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:58:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:58:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:58:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:58:49,862 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:58:49,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:58:49,902 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-20 05:58:50,015 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:58:50,022 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:58:50,022 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 05:58:50,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:58:50 BoogieIcfgContainer [2021-11-20 05:58:50,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:58:50,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:58:50,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:58:50,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:58:50,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:58:49" (1/3) ... [2021-11-20 05:58:50,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d17bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:58:50, skipping insertion in model container [2021-11-20 05:58:50,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:58:49" (2/3) ... [2021-11-20 05:58:50,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d17bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:58:50, skipping insertion in model container [2021-11-20 05:58:50,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:58:50" (3/3) ... [2021-11-20 05:58:50,033 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-11-20 05:58:50,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:58:50,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:58:50,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:58:50,093 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=PETRI_NET, 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 [2021-11-20 05:58:50,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:58:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:58:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:58:50,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:50,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:50,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:50,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 943582971, now seen corresponding path program 1 times [2021-11-20 05:58:50,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:50,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580229421] [2021-11-20 05:58:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:50,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580229421] [2021-11-20 05:58:50,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580229421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:50,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:50,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:58:50,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688723797] [2021-11-20 05:58:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:50,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:58:50,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:58:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:58:50,339 INFO L87 Difference]: Start difference. First operand has 27 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 5.5) internal successors, (11), 2 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) [2021-11-20 05:58:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:50,355 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-11-20 05:58:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:58:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:58:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:50,363 INFO L225 Difference]: With dead ends: 40 [2021-11-20 05:58:50,364 INFO L226 Difference]: Without dead ends: 20 [2021-11-20 05:58:50,366 INFO L932 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 [2021-11-20 05:58:50,370 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:50,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:58:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-20 05:58:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-20 05:58:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2021-11-20 05:58:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-20 05:58:50,398 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2021-11-20 05:58:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:50,399 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-20 05:58:50,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-20 05:58:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-20 05:58:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:58:50,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:50,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:50,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:58:50,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 267820561, now seen corresponding path program 1 times [2021-11-20 05:58:50,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231306010] [2021-11-20 05:58:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:50,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:50,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231306010] [2021-11-20 05:58:50,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231306010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:50,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:50,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:58:50,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473878712] [2021-11-20 05:58:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:50,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:58:50,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:50,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:58:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:58:50,502 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:58:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:50,623 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-11-20 05:58:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:58:50,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:58:50,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:50,627 INFO L225 Difference]: With dead ends: 44 [2021-11-20 05:58:50,627 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 05:58:50,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:58:50,634 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:50,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 57 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:58:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 05:58:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-11-20 05:58:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2021-11-20 05:58:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-11-20 05:58:50,652 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2021-11-20 05:58:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:50,653 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-11-20 05:58:50,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:58:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-11-20 05:58:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:58:50,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:50,657 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:58:50,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -273802420, now seen corresponding path program 1 times [2021-11-20 05:58:50,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:50,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482015873] [2021-11-20 05:58:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:50,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:50,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482015873] [2021-11-20 05:58:50,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482015873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:50,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:50,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:58:50,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640258545] [2021-11-20 05:58:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:50,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:58:50,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:58:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:58:50,793 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:58:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:50,862 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-11-20 05:58:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:58:50,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 [2021-11-20 05:58:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:50,863 INFO L225 Difference]: With dead ends: 46 [2021-11-20 05:58:50,864 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 05:58:50,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:58:50,866 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:50,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 61 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:58:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 05:58:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-11-20 05:58:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2021-11-20 05:58:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-20 05:58:50,872 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2021-11-20 05:58:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:50,872 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-20 05:58:50,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-20 05:58:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-20 05:58:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:58:50,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:50,874 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:50,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:58:50,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1517543941, now seen corresponding path program 1 times [2021-11-20 05:58:50,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182144491] [2021-11-20 05:58:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:50,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:50,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182144491] [2021-11-20 05:58:50,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182144491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:50,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:50,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:58:50,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015677054] [2021-11-20 05:58:50,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:50,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:58:50,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:58:50,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:58:50,939 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:58:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:51,000 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2021-11-20 05:58:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:58:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 [2021-11-20 05:58:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:51,002 INFO L225 Difference]: With dead ends: 44 [2021-11-20 05:58:51,002 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 05:58:51,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:58:51,004 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:51,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:58:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 05:58:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2021-11-20 05:58:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2021-11-20 05:58:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-20 05:58:51,009 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2021-11-20 05:58:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:51,010 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-20 05:58:51,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-20 05:58:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-20 05:58:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:58:51,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:51,011 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:51,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:58:51,012 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1906655974, now seen corresponding path program 1 times [2021-11-20 05:58:51,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066593488] [2021-11-20 05:58:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:51,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:51,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:51,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066593488] [2021-11-20 05:58:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066593488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:51,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:58:51,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003720541] [2021-11-20 05:58:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:51,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:58:51,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:58:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:58:51,077 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-20 05:58:51,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:51,089 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-11-20 05:58:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:58:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) Word has length 19 [2021-11-20 05:58:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:51,091 INFO L225 Difference]: With dead ends: 50 [2021-11-20 05:58:51,091 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 05:58:51,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:58:51,093 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:51,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:58:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 05:58:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-11-20 05:58:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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) [2021-11-20 05:58:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-11-20 05:58:51,099 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2021-11-20 05:58:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:51,099 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-11-20 05:58:51,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-20 05:58:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-11-20 05:58:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:58:51,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:51,101 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:51,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:58:51,101 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1462919029, now seen corresponding path program 1 times [2021-11-20 05:58:51,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:51,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141354209] [2021-11-20 05:58:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:51,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:51,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:51,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141354209] [2021-11-20 05:58:51,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141354209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:58:51,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522005518] [2021-11-20 05:58:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:51,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:51,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:51,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:58:51,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:58:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:58:51,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:51,399 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 [2021-11-20 05:58:51,557 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 [2021-11-20 05:58:51,622 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:58:51,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:58:51,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:58:51,719 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 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 05:58:51,828 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:58:51,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:58:51,966 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:58:51,968 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 26 treesize of output 14 [2021-11-20 05:58:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:51,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:58:55,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_21| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_1)))) (store .cse0 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_21| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-11-20 05:58:55,537 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 220 treesize of output 212 [2021-11-20 05:58:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:56,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522005518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:58:56,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:58:56,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-20 05:58:56,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067962364] [2021-11-20 05:58:56,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:58:56,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:58:56,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:58:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=268, Unknown=6, NotChecked=34, Total=380 [2021-11-20 05:58:56,483 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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) [2021-11-20 05:58:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:59,764 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-11-20 05:58:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:58:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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 19 [2021-11-20 05:58:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:59,768 INFO L225 Difference]: With dead ends: 59 [2021-11-20 05:58:59,768 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 05:58:59,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=117, Invalid=385, Unknown=8, NotChecked=42, Total=552 [2021-11-20 05:58:59,769 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:59,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 98 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2021-11-20 05:58:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 05:58:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2021-11-20 05:58:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 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) [2021-11-20 05:58:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-11-20 05:58:59,777 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 19 [2021-11-20 05:58:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:59,777 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-11-20 05:58:59,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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) [2021-11-20 05:58:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-11-20 05:58:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:58:59,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:59,778 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:59,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:59,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:59,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1319849960, now seen corresponding path program 1 times [2021-11-20 05:58:59,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:59,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199868734] [2021-11-20 05:58:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:59,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:00,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199868734] [2021-11-20 05:59:00,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199868734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:00,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124562707] [2021-11-20 05:59:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:00,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:00,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:00,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:59:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:00,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:59:00,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:00,193 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 [2021-11-20 05:59:00,277 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 [2021-11-20 05:59:00,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:59:00,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:59:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:00,412 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 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 05:59:00,471 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:59:00,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:59:00,570 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:59:00,571 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 26 treesize of output 14 [2021-11-20 05:59:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:00,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:08,983 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 117 treesize of output 113 [2021-11-20 05:59:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:09,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124562707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:09,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:59:09,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-20 05:59:09,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031055084] [2021-11-20 05:59:09,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:09,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:59:09,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:59:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=296, Unknown=10, NotChecked=0, Total=380 [2021-11-20 05:59:09,871 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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) [2021-11-20 05:59:18,845 WARN L227 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 34 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:59:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:29,877 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2021-11-20 05:59:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:59:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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 19 [2021-11-20 05:59:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:29,880 INFO L225 Difference]: With dead ends: 94 [2021-11-20 05:59:29,880 INFO L226 Difference]: Without dead ends: 90 [2021-11-20 05:59:29,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=168, Invalid=569, Unknown=19, NotChecked=0, Total=756 [2021-11-20 05:59:29,882 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:29,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 130 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 102 Invalid, 0 Unknown, 134 Unchecked, 0.1s Time] [2021-11-20 05:59:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-20 05:59:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 55. [2021-11-20 05:59:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 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) [2021-11-20 05:59:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2021-11-20 05:59:29,892 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 19 [2021-11-20 05:59:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:29,893 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2021-11-20 05:59:29,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 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) [2021-11-20 05:59:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2021-11-20 05:59:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:59:29,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:29,894 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:29,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:30,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 05:59:30,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:30,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash 876113015, now seen corresponding path program 1 times [2021-11-20 05:59:30,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:30,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885825674] [2021-11-20 05:59:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:30,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:30,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:30,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885825674] [2021-11-20 05:59:30,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885825674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:59:30,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:59:30,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:59:30,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116402347] [2021-11-20 05:59:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:59:30,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:59:30,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:59:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:59:30,193 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-20 05:59:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:30,202 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2021-11-20 05:59:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:59:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) Word has length 19 [2021-11-20 05:59:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:30,206 INFO L225 Difference]: With dead ends: 73 [2021-11-20 05:59:30,206 INFO L226 Difference]: Without dead ends: 59 [2021-11-20 05:59:30,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:59:30,207 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:30,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:59:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-20 05:59:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-11-20 05:59:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 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) [2021-11-20 05:59:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-11-20 05:59:30,223 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 19 [2021-11-20 05:59:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:30,223 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-11-20 05:59:30,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-20 05:59:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-11-20 05:59:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 05:59:30,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:30,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:30,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:59:30,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:30,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1445257616, now seen corresponding path program 1 times [2021-11-20 05:59:30,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:30,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815252471] [2021-11-20 05:59:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:30,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:30,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:30,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815252471] [2021-11-20 05:59:30,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815252471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826987834] [2021-11-20 05:59:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:30,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:30,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:30,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:30,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:59:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 05:59:30,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:30,468 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 [2021-11-20 05:59:30,551 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:59:30,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:59:30,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:59:30,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 05:59:30,667 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:30,668 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 84 [2021-11-20 05:59:30,672 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 85 treesize of output 75 [2021-11-20 05:59:30,687 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:30,687 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 59 [2021-11-20 05:59:30,730 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 48 treesize of output 30 [2021-11-20 05:59:30,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 05:59:30,747 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 [2021-11-20 05:59:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:30,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:30,801 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 93 treesize of output 77 [2021-11-20 05:59:30,883 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 83 treesize of output 77 [2021-11-20 05:59:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:30,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:30,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:59:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:31,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826987834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:31,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:59:31,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-11-20 05:59:31,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424205419] [2021-11-20 05:59:31,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:31,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:59:31,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:59:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:59:31,090 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-20 05:59:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:31,329 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-11-20 05:59:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:59:31,329 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 21 [2021-11-20 05:59:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:31,330 INFO L225 Difference]: With dead ends: 79 [2021-11-20 05:59:31,330 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 05:59:31,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:59:31,342 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:31,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 157 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 205 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2021-11-20 05:59:31,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 05:59:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2021-11-20 05:59:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 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) [2021-11-20 05:59:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-20 05:59:31,351 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 21 [2021-11-20 05:59:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:31,352 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-20 05:59:31,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-20 05:59:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-20 05:59:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 05:59:31,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:31,353 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:31,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:31,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:31,582 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:31,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1652508907, now seen corresponding path program 2 times [2021-11-20 05:59:31,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:31,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119594936] [2021-11-20 05:59:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:31,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:31,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:31,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119594936] [2021-11-20 05:59:31,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119594936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:31,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788672411] [2021-11-20 05:59:31,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:59:31,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:31,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:31,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:59:31,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:59:31,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:59:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 05:59:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:31,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:59:31,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:59:31,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:59:31,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 05:59:31,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:59:31,982 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:31,983 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 84 [2021-11-20 05:59:31,986 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 85 treesize of output 75 [2021-11-20 05:59:31,997 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:31,998 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 59 [2021-11-20 05:59:32,037 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 48 treesize of output 30 [2021-11-20 05:59:32,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 05:59:32,047 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 [2021-11-20 05:59:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:32,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:32,125 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 72 treesize of output 56 [2021-11-20 05:59:32,204 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 200 treesize of output 188 [2021-11-20 05:59:32,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:32,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:32,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:59:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:32,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788672411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:32,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:59:32,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-20 05:59:32,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273980797] [2021-11-20 05:59:32,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:32,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:59:32,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:59:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:59:32,448 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-20 05:59:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:32,742 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-20 05:59:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:59:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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 23 [2021-11-20 05:59:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:32,743 INFO L225 Difference]: With dead ends: 81 [2021-11-20 05:59:32,743 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 05:59:32,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2021-11-20 05:59:32,745 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:32,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 129 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 169 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2021-11-20 05:59:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 05:59:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2021-11-20 05:59:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 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) [2021-11-20 05:59:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-11-20 05:59:32,755 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 23 [2021-11-20 05:59:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:32,756 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-11-20 05:59:32,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-20 05:59:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-11-20 05:59:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 05:59:32,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:32,757 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:32,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:32,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:32,978 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:32,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1313154078, now seen corresponding path program 1 times [2021-11-20 05:59:32,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:32,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301455571] [2021-11-20 05:59:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:32,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:33,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:33,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301455571] [2021-11-20 05:59:33,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301455571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:33,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395726474] [2021-11-20 05:59:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:33,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:33,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:33,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:59:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:33,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 05:59:33,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:33,175 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 [2021-11-20 05:59:33,244 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:59:33,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:59:33,280 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 18 treesize of output 14 [2021-11-20 05:59:33,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:59:33,338 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:33,338 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 84 [2021-11-20 05:59:33,341 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 85 treesize of output 75 [2021-11-20 05:59:33,350 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 05:59:33,351 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 59 [2021-11-20 05:59:33,388 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 48 treesize of output 30 [2021-11-20 05:59:33,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 05:59:33,399 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 [2021-11-20 05:59:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:33,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:33,471 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 72 treesize of output 56 [2021-11-20 05:59:33,555 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 83 treesize of output 77 [2021-11-20 05:59:33,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:33,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:33,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:59:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:33,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395726474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:33,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:59:33,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-20 05:59:33,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054764645] [2021-11-20 05:59:33,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:33,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:59:33,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:59:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:59:33,783 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-20 05:59:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:34,090 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-11-20 05:59:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:59:34,091 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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 23 [2021-11-20 05:59:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:34,092 INFO L225 Difference]: With dead ends: 75 [2021-11-20 05:59:34,092 INFO L226 Difference]: Without dead ends: 63 [2021-11-20 05:59:34,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2021-11-20 05:59:34,093 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:34,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 144 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 188 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2021-11-20 05:59:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-20 05:59:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2021-11-20 05:59:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 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) [2021-11-20 05:59:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-11-20 05:59:34,099 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 23 [2021-11-20 05:59:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-11-20 05:59:34,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-20 05:59:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-11-20 05:59:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:59:34,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:34,101 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:34,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:34,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:34,326 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1075490678, now seen corresponding path program 2 times [2021-11-20 05:59:34,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678261112] [2021-11-20 05:59:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:34,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:34,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678261112] [2021-11-20 05:59:34,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678261112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828964256] [2021-11-20 05:59:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:59:34,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:34,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:34,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:34,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:59:34,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:59:34,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:59:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 05:59:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:34,596 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 [2021-11-20 05:59:34,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:59:34,669 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:59:34,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 05:59:34,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:34,702 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 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 05:59:34,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:34,748 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 19 treesize of output 18 [2021-11-20 05:59:34,853 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 05:59:34,853 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 38 treesize of output 25 [2021-11-20 05:59:34,992 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-11-20 05:59:34,993 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 30 treesize of output 44 [2021-11-20 05:59:37,476 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:59:37,480 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 26 treesize of output 14 [2021-11-20 05:59:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:59:37,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:39,001 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2021-11-20 05:59:40,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) is different from false [2021-11-20 05:59:42,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 1 .cse0) (= 3 .cse0)))) is different from false [2021-11-20 05:59:44,010 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| 1) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2021-11-20 05:59:46,056 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_63| Int) (v_DerPreprocessor_10 Int)) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_10)))) (store .cse2 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_63| 1) (+ |v_ULTIMATE.start_main_~p~0#1.offset_63| 4) v_DerPreprocessor_9))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 1 .cse0)))) is different from false [2021-11-20 05:59:46,178 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 2165 treesize of output 2149 [2021-11-20 05:59:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-20 05:59:53,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828964256] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:53,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:59:53,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 27 [2021-11-20 05:59:53,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113018136] [2021-11-20 05:59:53,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:53,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 05:59:53,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 05:59:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=387, Unknown=8, NotChecked=220, Total=702 [2021-11-20 05:59:53,832 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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) [2021-11-20 05:59:55,858 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~p~0#1.offset|) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_63| Int) (v_DerPreprocessor_10 Int)) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_10)))) (store .cse2 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_63| 1) (+ |v_ULTIMATE.start_main_~p~0#1.offset_63| 4) v_DerPreprocessor_9))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 1 .cse0))))) is different from false [2021-11-20 05:59:57,672 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~p~0#1.offset|) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_63| Int) (v_DerPreprocessor_10 Int)) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_10)))) (store .cse2 |c_ULTIMATE.start_main_~t~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_main_~t~0#1.base|) |v_ULTIMATE.start_main_~p~0#1.offset_63| 1) (+ |v_ULTIMATE.start_main_~p~0#1.offset_63| 4) v_DerPreprocessor_9))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 1 .cse0))))) is different from false [2021-11-20 05:59:59,677 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 1)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset| 1) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0))))) is different from false [2021-11-20 06:00:01,689 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 1 .cse0) (= 3 .cse0))))) is different from false [2021-11-20 06:00:03,354 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_60| Int) (v_DerPreprocessor_9 Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_DerPreprocessor_9)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_60|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0)) is different from false [2021-11-20 06:00:05,359 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_58| Int) (|v_ULTIMATE.start_main_~p~0#1.base_56| Int)) (and (not (= |v_ULTIMATE.start_main_~p~0#1.base_56| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_56|) |v_ULTIMATE.start_main_~p~0#1.offset_58|) 1)))) is different from false [2021-11-20 06:00:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:05,415 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-11-20 06:00:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:00:05,416 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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 25 [2021-11-20 06:00:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:05,416 INFO L225 Difference]: With dead ends: 70 [2021-11-20 06:00:05,416 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 06:00:05,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=99, Invalid=393, Unknown=14, NotChecked=550, Total=1056 [2021-11-20 06:00:05,418 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:05,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 196 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 239 Unchecked, 0.1s Time] [2021-11-20 06:00:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 06:00:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2021-11-20 06:00:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 60 states have internal predecessors, (67), 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) [2021-11-20 06:00:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2021-11-20 06:00:05,424 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 25 [2021-11-20 06:00:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:05,425 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2021-11-20 06:00:05,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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) [2021-11-20 06:00:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2021-11-20 06:00:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:00:05,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:05,426 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:05,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:00:05,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 06:00:05,627 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:00:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1574953317, now seen corresponding path program 3 times [2021-11-20 06:00:05,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:05,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149051526] [2021-11-20 06:00:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:05,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:05,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149051526] [2021-11-20 06:00:05,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149051526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:00:05,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825533767] [2021-11-20 06:00:05,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:00:05,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:00:05,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:00:06,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:00:06,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 06:00:06,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:00:06,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 06:00:06,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:00:06,073 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 [2021-11-20 06:00:06,134 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:00:06,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 06:00:06,187 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 [2021-11-20 06:00:06,192 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 16 treesize of output 12 [2021-11-20 06:00:06,265 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:00:06,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2021-11-20 06:00:06,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:00:06,280 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 30 treesize of output 14 [2021-11-20 06:00:06,390 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 06:00:06,391 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 103 [2021-11-20 06:00:06,402 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 06:00:06,403 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 90 [2021-11-20 06:00:06,414 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-11-20 06:00:06,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 68 [2021-11-20 06:00:06,517 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-20 06:00:06,517 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 133 [2021-11-20 06:00:06,535 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-20 06:00:06,536 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 3 case distinctions, treesize of input 116 treesize of output 74 [2021-11-20 06:00:06,550 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-20 06:00:06,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 64 [2021-11-20 06:00:06,725 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 82 treesize of output 58 [2021-11-20 06:00:06,732 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:00:06,733 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 55 treesize of output 39 [2021-11-20 06:00:06,906 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:00:06,906 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 22 treesize of output 14 [2021-11-20 06:00:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:06,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:09,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse1 (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)))) (let ((.cse0 (let ((.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))) (or (= .cse0 1) (not (= (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (= 3 .cse0))))) is different from false [2021-11-20 06:00:11,250 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_71| Int) (v_DerPreprocessor_13 Int) (|ULTIMATE.start_main_~t~0#1.base| Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse0 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 v_DerPreprocessor_13)))) (store .cse6 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse6 |v_ULTIMATE.start_main_~p~0#1.base_71|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))))) (let ((.cse1 (let ((.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select .cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 |ULTIMATE.start_main_~t~0#1.base|)))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_71|) |c_ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_11))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 |c_ULTIMATE.start_main_~t~0#1.offset|)))) (store .cse5 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse5 |v_ULTIMATE.start_main_~p~0#1.base_71|) |c_ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) (or (not (= (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (= .cse1 1) (= .cse1 3)))))) is different from false [2021-11-20 06:00:13,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_71| Int) (v_DerPreprocessor_13 Int) (|ULTIMATE.start_main_~t~0#1.base| Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse1 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 v_DerPreprocessor_13)))) (store .cse6 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse6 |v_ULTIMATE.start_main_~p~0#1.base_71|) 0 3))))) (let ((.cse0 (let ((.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select .cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 |ULTIMATE.start_main_~t~0#1.base|)))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_71|) 0 v_DerPreprocessor_11))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3 0)))) (store .cse5 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse5 |v_ULTIMATE.start_main_~p~0#1.base_71|) 0 v_DerPreprocessor_12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) (or (= .cse0 1) (= .cse0 3) (not (= (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))))))) is different from false [2021-11-20 06:00:13,390 INFO L354 Elim1Store]: treesize reduction 4, result has 95.3 percent of original size [2021-11-20 06:00:13,390 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 15489 treesize of output 14318 [2021-11-20 06:00:35,010 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_71| Int) (v_DerPreprocessor_14 Int) (|ULTIMATE.start_main_~t~0#1.base| Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_DerPreprocessor_15 Int)) (let ((.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse1 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_15) .cse5 0)))) (store .cse7 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse7 |v_ULTIMATE.start_main_~p~0#1.base_71|) 0 v_DerPreprocessor_12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)) (.cse0 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| v_DerPreprocessor_14) .cse5 |ULTIMATE.start_main_~t~0#1.base|)))) (store .cse4 |v_ULTIMATE.start_main_~p~0#1.base_71| (store (select .cse4 |v_ULTIMATE.start_main_~p~0#1.base_71|) 0 v_DerPreprocessor_11))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (or (and (= |c_ULTIMATE.start_main_~a~0#1.base| .cse0) (= |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) (let ((.cse2 (and (= .cse1 0) (= |v_ULTIMATE.start_main_~p~0#1.base_71| .cse0))) (.cse3 (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |v_ULTIMATE.start_main_~p~0#1.base_71| |c_ULTIMATE.start_main_~a~0#1.base|)))) (and (or .cse2 (= |c_ULTIMATE.start_main_~p~0#1.base| .cse0) .cse3) (or .cse2 (= .cse1 |c_ULTIMATE.start_main_~p~0#1.offset|) .cse3))))))) is different from false [2021-11-20 06:00:37,436 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 13952 treesize of output 13760 [2021-11-20 06:00:37,701 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 15257 treesize of output 15209 [2021-11-20 06:00:38,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:00:38,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:00:38,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-20 06:00:38,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851322186] [2021-11-20 06:00:38,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:00:38,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:00:38,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:00:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:00:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=723, Unknown=4, NotChecked=228, Total=1056 [2021-11-20 06:00:38,473 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-20 06:00:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:38,934 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-11-20 06:00:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:00:38,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 27 [2021-11-20 06:00:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:38,936 INFO L225 Difference]: With dead ends: 79 [2021-11-20 06:00:38,936 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 06:00:38,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=200, Invalid=1452, Unknown=4, NotChecked=324, Total=1980 [2021-11-20 06:00:38,937 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:38,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 134 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:00:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 06:00:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-11-20 06:00:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 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) [2021-11-20 06:00:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-11-20 06:00:38,944 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 27 [2021-11-20 06:00:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:38,944 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-11-20 06:00:38,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-20 06:00:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-11-20 06:00:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:00:38,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:38,946 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:38,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:00:39,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:00:39,166 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:00:39,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1961532986, now seen corresponding path program 2 times [2021-11-20 06:00:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:39,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585436640] [2021-11-20 06:00:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:39,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:39,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585436640] [2021-11-20 06:00:39,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585436640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:00:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98780023] [2021-11-20 06:00:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:00:39,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:00:39,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:00:39,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:00:39,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:00:39,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:00:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 06:00:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:00:39,545 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 [2021-11-20 06:00:39,613 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 06:00:39,613 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 17 treesize of output 21 [2021-11-20 06:00:39,666 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 [2021-11-20 06:00:39,670 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 21 treesize of output 17 [2021-11-20 06:00:39,740 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 [2021-11-20 06:00:39,751 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:00:39,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-11-20 06:00:39,759 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 [2021-11-20 06:00:39,808 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 06:00:39,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-20 06:00:39,897 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 06:00:39,897 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 117 [2021-11-20 06:00:39,907 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 06:00:39,907 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 132 [2021-11-20 06:00:39,916 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-11-20 06:00:39,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 118 [2021-11-20 06:00:40,031 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-20 06:00:40,031 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 153 [2021-11-20 06:00:40,050 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 06:00:40,051 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 146 [2021-11-20 06:00:40,060 INFO L354 Elim1Store]: treesize reduction 105, result has 12.5 percent of original size [2021-11-20 06:00:40,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 119 [2021-11-20 06:00:40,186 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-20 06:00:40,186 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 137 treesize of output 74 [2021-11-20 06:00:40,197 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:00:40,198 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 68 treesize of output 45 [2021-11-20 06:00:40,280 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-20 06:00:40,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-11-20 06:00:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:40,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:40,720 INFO L354 Elim1Store]: treesize reduction 4, result has 95.3 percent of original size [2021-11-20 06:00:40,720 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 1381 treesize of output 1368 [2021-11-20 06:00:48,187 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 20269 treesize of output 19981 [2021-11-20 06:00:49,053 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 26876 treesize of output 26732 [2021-11-20 06:00:49,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:00:49,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:00:49,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-20 06:00:49,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108223339] [2021-11-20 06:00:49,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:00:49,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:00:49,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:00:49,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:00:49,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=604, Unknown=2, NotChecked=0, Total=702 [2021-11-20 06:00:49,669 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-20 06:00:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:50,158 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-20 06:00:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:00:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 27 [2021-11-20 06:00:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:50,159 INFO L225 Difference]: With dead ends: 81 [2021-11-20 06:00:50,159 INFO L226 Difference]: Without dead ends: 77 [2021-11-20 06:00:50,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=179, Invalid=1079, Unknown=2, NotChecked=0, Total=1260 [2021-11-20 06:00:50,161 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:50,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 161 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:00:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-20 06:00:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2021-11-20 06:00:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 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) [2021-11-20 06:00:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-11-20 06:00:50,173 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 27 [2021-11-20 06:00:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:50,173 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-11-20 06:00:50,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2021-11-20 06:00:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-11-20 06:00:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:00:50,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:50,175 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:50,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:00:50,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:50,402 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:00:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1736025984, now seen corresponding path program 4 times [2021-11-20 06:00:50,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:50,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344297111] [2021-11-20 06:00:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:50,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:50,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344297111] [2021-11-20 06:00:50,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344297111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:00:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758442209] [2021-11-20 06:00:50,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:00:50,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:00:50,807 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:00:50,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c589f752-8297-43f6-b65e-af8edcb4af4e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:00:50,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:00:50,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:00:50,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 06:00:50,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:00:50,900 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 [2021-11-20 06:00:50,995 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 06:00:50,995 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 17 treesize of output 21 [2021-11-20 06:00:51,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:00:51,061 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 23 treesize of output 19 [2021-11-20 06:00:51,143 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:00:51,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-20 06:00:51,162 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:00:51,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 22 [2021-11-20 06:00:51,215 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-20 06:00:51,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-20 06:00:51,298 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-20 06:00:51,298 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 89 [2021-11-20 06:00:51,311 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-20 06:00:51,311 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 106 [2021-11-20 06:00:51,435 INFO L354 Elim1Store]: treesize reduction 132, result has 15.9 percent of original size [2021-11-20 06:00:51,436 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 336 treesize of output 143 [2021-11-20 06:00:51,455 INFO L354 Elim1Store]: treesize reduction 124, result has 15.6 percent of original size [2021-11-20 06:00:51,455 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 152 [2021-11-20 06:00:51,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 104 [2021-11-20 06:00:51,597 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-20 06:00:51,597 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 146 treesize of output 53 [2021-11-20 06:00:51,606 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 06:00:51,607 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 47 treesize of output 28 [2021-11-20 06:00:51,622 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 [2021-11-20 06:00:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:51,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:51,704 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 277 treesize of output 189 [2021-11-20 06:00:59,249 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_22 Int) (|ULTIMATE.start_main_~t~0#1.offset| Int) (v_DerPreprocessor_21 Int)) (= (let ((.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2 |ULTIMATE.start_main_~t~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~t~0#1.base|) |ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_22)))) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2 |c_ULTIMATE.start_main_~t~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~t~0#1.base|) |ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_21))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)) (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) .cse3))))) |ULTIMATE.start_main_~t~0#1.offset|)) (forall ((v_DerPreprocessor_22 Int) (|ULTIMATE.start_main_~t~0#1.offset| Int) (v_DerPreprocessor_21 Int)) (= (let ((.cse8 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse8 |c_ULTIMATE.start_main_~t~0#1.base|)))) (store .cse7 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~t~0#1.base|) |ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_21))))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (+ 4 (select (select (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse8 |ULTIMATE.start_main_~t~0#1.offset|)))) (store .cse9 |c_ULTIMATE.start_main_~t~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~t~0#1.base|) |ULTIMATE.start_main_~t~0#1.offset| v_DerPreprocessor_22))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) |c_ULTIMATE.start_main_~t~0#1.base|))) is different from false [2021-11-20 06:01:04,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:01:04,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 45389 treesize of output 42788 [2021-11-20 06:01:18,320 WARN L227 SmtUtils]: Spent 12.57s on a formula simplification. DAG size of input: 1071 DAG size of output: 501 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:01:18,322 INFO L354 Elim1Store]: treesize reduction 3943, result has 26.1 percent of original size [2021-11-20 06:01:18,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 23 new quantified variables, introduced 234 case distinctions, treesize of input 10439813 treesize of output 10220168