./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina1.c --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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/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 b1c30dcb0753c92b26d7933797d6cb35ad9e557c83930a4dbbba40b5521c6adf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:05:17,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:05:17,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:05:17,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:05:17,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:05:17,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:05:17,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:05:17,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:05:17,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:05:17,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:05:17,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:05:17,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:05:17,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:05:17,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:05:17,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:05:17,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:05:17,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:05:17,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:05:17,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:05:17,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:05:17,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:05:17,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:05:17,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:05:17,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:05:17,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:05:17,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:05:17,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:05:17,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:05:17,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:05:17,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:05:17,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:05:17,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:05:17,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:05:17,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:05:17,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:05:17,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:05:17,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:05:17,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:05:17,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:05:17,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:05:17,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:05:17,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:05:17,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:05:17,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:05:17,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:05:17,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:05:17,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:05:17,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:05:17,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:05:17,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:05:17,833 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:05:17,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:05:17,834 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:05:17,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:05:17,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:05:17,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:05:17,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:05:17,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:05:17,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:05:17,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:05:17,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:05:17,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:05:17,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:05:17,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:05:17,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:05:17,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:05:17,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:17,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:05:17,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:05:17,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:05:17,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:05:17,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:05:17,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:05:17,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:05:17,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:05:17,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:05:17,845 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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c30dcb0753c92b26d7933797d6cb35ad9e557c83930a4dbbba40b5521c6adf [2021-11-20 06:05:18,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:05:18,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:05:18,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:05:18,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:05:18,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:05:18,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-fpi/sina1.c [2021-11-20 06:05:18,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/data/2693abfea/98b5c03b661e4d2388a4576f71fd5941/FLAG7a54f0334 [2021-11-20 06:05:18,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:05:18,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/sv-benchmarks/c/array-fpi/sina1.c [2021-11-20 06:05:18,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/data/2693abfea/98b5c03b661e4d2388a4576f71fd5941/FLAG7a54f0334 [2021-11-20 06:05:19,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/data/2693abfea/98b5c03b661e4d2388a4576f71fd5941 [2021-11-20 06:05:19,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:05:19,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:05:19,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:19,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:05:19,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:05:19,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f28536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19, skipping insertion in model container [2021-11-20 06:05:19,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:05:19,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:19,415 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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/sv-benchmarks/c/array-fpi/sina1.c[588,601] [2021-11-20 06:05:19,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:19,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:05:19,499 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_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/sv-benchmarks/c/array-fpi/sina1.c[588,601] [2021-11-20 06:05:19,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:19,549 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:05:19,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19 WrapperNode [2021-11-20 06:05:19,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:19,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:19,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:05:19,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:05:19,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,611 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-11-20 06:05:19,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:19,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:05:19,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:05:19,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:05:19,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:05:19,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:05:19,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:05:19,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:05:19,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (1/1) ... [2021-11-20 06:05:19,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:19,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:19,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:19,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:05:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:05:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:05:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:05:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:05:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:05:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:05:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:05:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:05:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:05:19,867 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:05:19,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:05:20,048 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:05:20,056 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:05:20,056 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 06:05:20,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:20 BoogieIcfgContainer [2021-11-20 06:05:20,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:05:20,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:05:20,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:05:20,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:05:20,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:19" (1/3) ... [2021-11-20 06:05:20,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e64eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:20, skipping insertion in model container [2021-11-20 06:05:20,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:19" (2/3) ... [2021-11-20 06:05:20,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e64eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:20, skipping insertion in model container [2021-11-20 06:05:20,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:20" (3/3) ... [2021-11-20 06:05:20,069 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1.c [2021-11-20 06:05:20,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:05:20,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:05:20,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:05:20,160 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 06:05:20,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:05:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:05:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:05:20,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:20,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:20,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:20,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-11-20 06:05:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:20,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510186374] [2021-11-20 06:05:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:20,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:20,512 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 06:05:20,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510186374] [2021-11-20 06:05:20,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510186374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:20,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:05:20,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67402614] [2021-11-20 06:05:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:20,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:05:20,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:05:20,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:05:20,567 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 06:05:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:20,584 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-11-20 06:05:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:05:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:05:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:20,598 INFO L225 Difference]: With dead ends: 38 [2021-11-20 06:05:20,598 INFO L226 Difference]: Without dead ends: 17 [2021-11-20 06:05:20,602 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 06:05:20,608 INFO L933 BasicCegarLoop]: 24 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, 24 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 06:05:20,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:05:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-20 06:05:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-20 06:05:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 06:05:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-20 06:05:20,673 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-11-20 06:05:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:20,675 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-20 06:05:20,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 06:05:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-20 06:05:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:05:20,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:20,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:20,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:05:20,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-11-20 06:05:20,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450988525] [2021-11-20 06:05:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:20,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:20,819 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 06:05:20,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:20,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450988525] [2021-11-20 06:05:20,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450988525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:20,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:20,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:05:20,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513335620] [2021-11-20 06:05:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:20,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:05:20,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:05:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:05:20,826 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 06:05:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:20,896 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-11-20 06:05:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:05:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:05:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:20,898 INFO L225 Difference]: With dead ends: 37 [2021-11-20 06:05:20,899 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 06:05:20,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:05:20,902 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:20,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:05:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 06:05:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-11-20 06:05:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 06:05:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-20 06:05:20,912 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-20 06:05:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:20,912 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-20 06:05:20,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 06:05:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-20 06:05:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:05:20,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:20,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:20,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:05:20,915 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-11-20 06:05:20,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:20,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565319470] [2021-11-20 06:05:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:20,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:21,498 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 06:05:21,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:21,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565319470] [2021-11-20 06:05:21,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565319470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:21,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699573756] [2021-11-20 06:05:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:21,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:21,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:21,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:05:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:21,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:05:21,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:21,673 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 06:05:21,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:05:22,016 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-20 06:05:22,017 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 30 treesize of output 25 [2021-11-20 06:05:22,236 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 41 treesize of output 29 [2021-11-20 06:05:22,313 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 06:05:22,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:28,607 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 06:05:28,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699573756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:05:28,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:05:28,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-20 06:05:28,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672825830] [2021-11-20 06:05:28,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:28,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 06:05:28,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:05:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=336, Unknown=3, NotChecked=0, Total=420 [2021-11-20 06:05:28,611 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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 06:05:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:29,150 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-11-20 06:05:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:05:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:05:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:29,152 INFO L225 Difference]: With dead ends: 41 [2021-11-20 06:05:29,152 INFO L226 Difference]: Without dead ends: 39 [2021-11-20 06:05:29,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=259, Invalid=794, Unknown=3, NotChecked=0, Total=1056 [2021-11-20 06:05:29,154 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:29,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 99 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 190 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2021-11-20 06:05:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-20 06:05:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-11-20 06:05:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:05:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-20 06:05:29,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2021-11-20 06:05:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:29,162 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-20 06:05:29,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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 06:05:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-20 06:05:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:05:29,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:29,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:29,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:29,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:29,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 2 times [2021-11-20 06:05:29,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218345054] [2021-11-20 06:05:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:29,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:29,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:29,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218345054] [2021-11-20 06:05:29,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218345054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:29,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623078941] [2021-11-20 06:05:29,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:05:29,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:29,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:29,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:29,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:05:29,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:05:29,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:05:29,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:05:29,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:29,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:29,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623078941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:05:29,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:05:29,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:05:29,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333586704] [2021-11-20 06:05:29,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:29,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:05:29,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:05:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:05:29,818 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 06:05:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:30,022 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-11-20 06:05:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:05:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 06:05:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:30,024 INFO L225 Difference]: With dead ends: 58 [2021-11-20 06:05:30,025 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 06:05:30,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:05:30,027 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:30,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 81 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:05:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 06:05:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2021-11-20 06:05:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 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 06:05:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-20 06:05:30,039 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2021-11-20 06:05:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-20 06:05:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 06:05:30,040 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-20 06:05:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:05:30,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:30,041 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:30,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:30,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:30,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2021-11-20 06:05:30,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:30,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004235516] [2021-11-20 06:05:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:30,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:05:30,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:30,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004235516] [2021-11-20 06:05:30,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004235516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:30,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464179415] [2021-11-20 06:05:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:30,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:30,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:30,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:30,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:05:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:30,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:05:30,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:05:30,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:05:30,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464179415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:05:30,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:05:30,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:05:30,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928489801] [2021-11-20 06:05:30,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:05:30,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:05:30,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:30,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:05:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:05:30,689 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 06:05:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:30,801 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-11-20 06:05:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:05:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) Word has length 20 [2021-11-20 06:05:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:30,810 INFO L225 Difference]: With dead ends: 58 [2021-11-20 06:05:30,810 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 06:05:30,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:05:30,815 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:30,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 52 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:05:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 06:05:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2021-11-20 06:05:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:05:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-20 06:05:30,831 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2021-11-20 06:05:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:30,832 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-20 06:05:30,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 06:05:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-20 06:05:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:05:30,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:30,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:30,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 06:05:31,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:31,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2021-11-20 06:05:31,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295381489] [2021-11-20 06:05:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:31,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:31,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295381489] [2021-11-20 06:05:31,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295381489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:05:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055437161] [2021-11-20 06:05:31,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:05:31,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:31,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:31,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:05:31,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 06:05:31,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:05:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:05:31,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:31,603 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 06:05:31,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:05:31,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-20 06:05:31,920 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:05:31,921 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 30 treesize of output 21 [2021-11-20 06:05:32,043 INFO L354 Elim1Store]: treesize reduction 68, result has 18.1 percent of original size [2021-11-20 06:05:32,044 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 45 treesize of output 35 [2021-11-20 06:05:38,543 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 06:05:38,544 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 70 treesize of output 40 [2021-11-20 06:05:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:38,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:06:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055437161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:06:40,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:06:40,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 35 [2021-11-20 06:06:40,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521519730] [2021-11-20 06:06:40,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:06:40,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 06:06:40,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 06:06:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=985, Unknown=34, NotChecked=0, Total=1190 [2021-11-20 06:06:40,514 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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 06:06:47,439 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= c_~N~0 .cse0) (<= .cse0 c_~N~0) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|) c_~N~0))))) is different from false [2021-11-20 06:06:48,317 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse2 0)) (.cse0 (select (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) 0))) (and (<= .cse0 c_~N~0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= c_~N~0 .cse1) (<= .cse1 c_~N~0) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|) c_~N~0))) (<= c_~N~0 .cse0)))) is different from false [2021-11-20 06:06:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:48,350 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-20 06:06:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:06:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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) Word has length 20 [2021-11-20 06:06:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:48,352 INFO L225 Difference]: With dead ends: 48 [2021-11-20 06:06:48,352 INFO L226 Difference]: Without dead ends: 46 [2021-11-20 06:06:48,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=280, Invalid=1580, Unknown=40, NotChecked=170, Total=2070 [2021-11-20 06:06:48,355 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2021-11-20 06:06:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-20 06:06:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2021-11-20 06:06:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-11-20 06:06:48,365 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2021-11-20 06:06:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:48,366 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-11-20 06:06:48,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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 06:06:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-11-20 06:06:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:06:48,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:48,368 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:48,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:48,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 06:06:48,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 2 times [2021-11-20 06:06:48,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409738664] [2021-11-20 06:06:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:48,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:49,682 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 06:06:49,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409738664] [2021-11-20 06:06:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409738664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:06:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424802934] [2021-11-20 06:06:49,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:06:49,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:06:49,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:49,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:06:49,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:06:49,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:06:49,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:06:49,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:06:49,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:49,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 06:06:49,789 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 06:06:49,847 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 25 treesize of output 13 [2021-11-20 06:06:49,949 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 25 treesize of output 13 [2021-11-20 06:06:50,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-20 06:06:50,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:06:50,384 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-20 06:06:50,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 34 [2021-11-20 06:06:50,904 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 06:06:50,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 39 [2021-11-20 06:06:50,959 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 06:06:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:52,301 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 06:06:52,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424802934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:06:52,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:06:52,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2021-11-20 06:06:52,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494744781] [2021-11-20 06:06:52,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:06:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 06:06:52,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 06:06:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 06:06:52,307 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 40 states, 40 states have (on average 1.575) internal successors, (63), 40 states have internal predecessors, (63), 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 06:06:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:55,298 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2021-11-20 06:06:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:06:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 40 states have internal predecessors, (63), 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 24 [2021-11-20 06:06:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:55,300 INFO L225 Difference]: With dead ends: 72 [2021-11-20 06:06:55,300 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 06:06:55,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=542, Invalid=3240, Unknown=0, NotChecked=0, Total=3782 [2021-11-20 06:06:55,303 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 136 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:55,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 121 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 404 Invalid, 0 Unknown, 16 Unchecked, 0.6s Time] [2021-11-20 06:06:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 06:06:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-11-20 06:06:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 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 06:06:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-20 06:06:55,325 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 24 [2021-11-20 06:06:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:55,326 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-20 06:06:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.575) internal successors, (63), 40 states have internal predecessors, (63), 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 06:06:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-20 06:06:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:06:55,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:55,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:55,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:55,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 06:06:55,529 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2021-11-20 06:06:55,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:55,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656356462] [2021-11-20 06:06:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:55,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:56,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656356462] [2021-11-20 06:06:56,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656356462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:06:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313315355] [2021-11-20 06:06:56,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:06:56,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:06:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:56,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:06:56,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:06:56,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:06:56,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:06:56,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:06:56,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:56,471 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 06:06:56,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:06:56,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-20 06:06:56,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-20 06:06:56,971 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 06:06:56,971 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 34 treesize of output 25 [2021-11-20 06:06:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:06:57,134 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-20 06:06:57,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 06:06:58,266 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-20 06:06:58,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 57 [2021-11-20 06:06:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:58,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:08:28,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313315355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:28,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:28,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 45 [2021-11-20 06:08:28,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154443287] [2021-11-20 06:08:28,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:28,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-20 06:08:28,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-20 06:08:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1662, Unknown=47, NotChecked=0, Total=1980 [2021-11-20 06:08:28,141 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 45 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 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 06:08:30,177 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (select .cse4 0)) (.cse1 (select (store .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) .cse0) 0))) (and (<= .cse0 c_~N~0) (<= .cse1 c_~N~0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= (+ (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 4) 3) c_~N~0) (<= c_~N~0 .cse0) (<= c_~N~0 .cse2) (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) .cse0) (forall ((|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_70| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= c_~N~0 (select (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_70| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (<= .cse2 c_~N~0) (<= 3 c_~N~0) (<= c_~N~0 .cse1)))) is different from false [2021-11-20 06:08:31,911 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= (+ (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 4) 3) c_~N~0) (<= c_~N~0 .cse0) (<= .cse0 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_70| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_70| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) |c_ULTIMATE.start_main_~a~0#1.offset|) c_~N~0))))) is different from false [2021-11-20 06:08:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:37,129 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-11-20 06:08:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 06:08:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 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 24 [2021-11-20 06:08:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:37,130 INFO L225 Difference]: With dead ends: 67 [2021-11-20 06:08:37,130 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 06:08:37,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 98.8s TimeCoverageRelationStatistics Valid=551, Invalid=3565, Unknown=52, NotChecked=254, Total=4422 [2021-11-20 06:08:37,133 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 76 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:37,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 166 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 248 Invalid, 0 Unknown, 148 Unchecked, 0.2s Time] [2021-11-20 06:08:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 06:08:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2021-11-20 06:08:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 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 06:08:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-11-20 06:08:37,141 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2021-11-20 06:08:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-11-20 06:08:37,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 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 06:08:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-11-20 06:08:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 06:08:37,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:37,143 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:37,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:37,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:37,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:37,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 149788298, now seen corresponding path program 3 times [2021-11-20 06:08:37,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:37,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261847514] [2021-11-20 06:08:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:08:37,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261847514] [2021-11-20 06:08:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261847514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647744568] [2021-11-20 06:08:37,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:08:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:37,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:37,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:37,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:08:37,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 06:08:37,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:08:37,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 06:08:37,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:37,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 06:08:37,581 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 17 treesize of output 9 [2021-11-20 06:08:37,626 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 19 [2021-11-20 06:08:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:37,695 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-20 06:08:37,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-11-20 06:08:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:08:38,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:08:38,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647744568] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:38,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:38,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 27 [2021-11-20 06:08:38,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163295828] [2021-11-20 06:08:38,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:38,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:08:38,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:08:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:08:38,417 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 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 06:08:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:40,598 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-11-20 06:08:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:08:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 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 26 [2021-11-20 06:08:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:40,599 INFO L225 Difference]: With dead ends: 64 [2021-11-20 06:08:40,599 INFO L226 Difference]: Without dead ends: 49 [2021-11-20 06:08:40,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=239, Invalid=1567, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 06:08:40,601 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:40,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 111 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 193 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2021-11-20 06:08:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-20 06:08:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-20 06:08:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 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 06:08:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-11-20 06:08:40,610 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 26 [2021-11-20 06:08:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:40,610 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-11-20 06:08:40,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 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 06:08:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-11-20 06:08:40,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 06:08:40,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:40,612 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:40,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:40,837 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 5 times [2021-11-20 06:08:40,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:40,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87949379] [2021-11-20 06:08:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:40,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:41,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87949379] [2021-11-20 06:08:41,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87949379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14869047] [2021-11-20 06:08:41,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:08:41,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:41,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:41,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:08:41,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-20 06:08:41,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:08:41,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:08:41,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:41,759 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 06:08:41,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:08:41,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:08:41,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:08:41,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:08:42,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:08:42,090 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 06:08:42,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-11-20 06:08:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,194 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:08:42,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-20 06:08:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,335 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:08:42,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2021-11-20 06:08:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:42,502 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:08:42,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 62 [2021-11-20 06:08:42,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:08:42,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 38 [2021-11-20 06:08:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:42,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:10:26,026 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:10:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:10:28,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14869047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:10:28,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:10:28,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 56 [2021-11-20 06:10:28,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177524800] [2021-11-20 06:10:28,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:10:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-20 06:10:28,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:10:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-20 06:10:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=2789, Unknown=46, NotChecked=0, Total=3080 [2021-11-20 06:10:28,567 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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 06:11:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:11:40,403 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2021-11-20 06:11:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-20 06:11:40,404 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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 28 [2021-11-20 06:11:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:11:40,405 INFO L225 Difference]: With dead ends: 94 [2021-11-20 06:11:40,405 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 06:11:40,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 177.7s TimeCoverageRelationStatistics Valid=951, Invalid=7525, Unknown=80, NotChecked=0, Total=8556 [2021-11-20 06:11:40,409 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 190 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:11:40,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 233 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 710 Invalid, 0 Unknown, 216 Unchecked, 0.8s Time] [2021-11-20 06:11:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 06:11:40,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-11-20 06:11:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:11:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-20 06:11:40,417 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2021-11-20 06:11:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:11:40,418 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-20 06:11:40,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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 06:11:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-20 06:11:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:11:40,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:11:40,420 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:11:40,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:11:40,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:11:40,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:11:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:11:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1600979898, now seen corresponding path program 4 times [2021-11-20 06:11:40,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:11:40,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684761089] [2021-11-20 06:11:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:11:40,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:11:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:11:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:11:40,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:11:40,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684761089] [2021-11-20 06:11:40,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684761089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:11:40,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478707975] [2021-11-20 06:11:40,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:11:40,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:11:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:11:40,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:11:40,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:11:40,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:11:40,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:11:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:11:40,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:11:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:11:40,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:11:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:11:41,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478707975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:11:41,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:11:41,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2021-11-20 06:11:41,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70067383] [2021-11-20 06:11:41,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:11:41,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:11:41,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:11:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:11:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:11:41,134 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:11:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:11:41,448 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-11-20 06:11:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:11:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 06:11:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:11:41,450 INFO L225 Difference]: With dead ends: 71 [2021-11-20 06:11:41,450 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 06:11:41,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:11:41,452 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 182 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:11:41,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 98 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:11:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 06:11:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2021-11-20 06:11:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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 06:11:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-20 06:11:41,463 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 36 [2021-11-20 06:11:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:11:41,464 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-20 06:11:41,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:11:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-20 06:11:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:11:41,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:11:41,466 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:11:41,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:11:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:11:41,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:11:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:11:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1226631488, now seen corresponding path program 5 times [2021-11-20 06:11:41,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:11:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951088837] [2021-11-20 06:11:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:11:41,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:11:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:11:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:11:43,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:11:43,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951088837] [2021-11-20 06:11:43,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951088837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:11:43,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940330945] [2021-11-20 06:11:43,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:11:43,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:11:43,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:11:43,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:11:43,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:11:43,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-20 06:11:43,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:11:43,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 06:11:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:11:43,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 06:11:43,875 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 06:11:43,929 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 25 treesize of output 13 [2021-11-20 06:11:43,995 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 25 treesize of output 13 [2021-11-20 06:11:44,074 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 25 treesize of output 13 [2021-11-20 06:11:44,147 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 25 treesize of output 13 [2021-11-20 06:11:44,231 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 25 treesize of output 13 [2021-11-20 06:11:44,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-20 06:11:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-11-20 06:11:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-20 06:11:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:44,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-11-20 06:11:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:11:45,245 INFO L354 Elim1Store]: treesize reduction 87, result has 7.4 percent of original size [2021-11-20 06:11:45,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 71 treesize of output 72 [2021-11-20 06:11:46,250 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-20 06:11:46,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 48 [2021-11-20 06:11:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:11:46,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:11:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:11:54,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940330945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:11:54,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:11:54,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 23] total 68 [2021-11-20 06:11:54,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98030293] [2021-11-20 06:11:54,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:11:54,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-20 06:11:54,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:11:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-20 06:11:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4294, Unknown=0, NotChecked=0, Total=4556 [2021-11-20 06:11:54,372 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 68 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 68 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:03,482 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-11-20 06:12:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 06:12:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 68 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 06:12:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:03,483 INFO L225 Difference]: With dead ends: 88 [2021-11-20 06:12:03,483 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 06:12:03,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=969, Invalid=9743, Unknown=0, NotChecked=0, Total=10712 [2021-11-20 06:12:03,487 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 211 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:03,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 544 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1577 Invalid, 0 Unknown, 75 Unchecked, 2.4s Time] [2021-11-20 06:12:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 06:12:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-11-20 06:12:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-11-20 06:12:03,511 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 36 [2021-11-20 06:12:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:03,512 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-11-20 06:12:03,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 68 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-11-20 06:12:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 06:12:03,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:03,519 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:03,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:03,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 06:12:03,726 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:12:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1377034946, now seen corresponding path program 6 times [2021-11-20 06:12:03,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:12:03,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033522819] [2021-11-20 06:12:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:03,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:12:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:12:03,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:12:03,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033522819] [2021-11-20 06:12:03,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033522819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:12:03,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711391936] [2021-11-20 06:12:03,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:12:03,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:12:03,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:12:03,877 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:12:03,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:12:03,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-20 06:12:03,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:12:03,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:12:03,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:12:04,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:12:04,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711391936] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:12:04,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:12:04,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2021-11-20 06:12:04,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644050541] [2021-11-20 06:12:04,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:12:04,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:12:04,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:12:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:12:04,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:12:04,250 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:12:04,668 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2021-11-20 06:12:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:12:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-20 06:12:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:12:04,670 INFO L225 Difference]: With dead ends: 118 [2021-11-20 06:12:04,670 INFO L226 Difference]: Without dead ends: 109 [2021-11-20 06:12:04,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 06:12:04,672 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 136 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:12:04,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 274 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:12:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-20 06:12:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 72. [2021-11-20 06:12:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 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 06:12:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-11-20 06:12:04,685 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 38 [2021-11-20 06:12:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:12:04,686 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-11-20 06:12:04,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-11-20 06:12:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:12:04,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:12:04,687 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:12:04,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:12:04,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:12:04,897 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:12:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1650650108, now seen corresponding path program 7 times [2021-11-20 06:12:04,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:12:04,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192290482] [2021-11-20 06:12:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:04,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:12:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 16 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:06,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:12:06,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192290482] [2021-11-20 06:12:06,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192290482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:12:06,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241936442] [2021-11-20 06:12:06,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:12:06,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:12:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:12:06,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:12:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f82f8-e5d9-4b74-a176-b7a8f0992c72/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:12:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:06,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-20 06:12:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:12:06,329 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 06:12:06,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 06:12:06,368 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 25 treesize of output 13 [2021-11-20 06:12:06,472 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 32 treesize of output 16 [2021-11-20 06:12:06,607 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 32 treesize of output 16 [2021-11-20 06:12:06,746 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 32 treesize of output 16 [2021-11-20 06:12:06,869 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 32 treesize of output 16 [2021-11-20 06:12:06,981 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 32 treesize of output 16 [2021-11-20 06:12:07,218 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 34 treesize of output 25 [2021-11-20 06:12:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:07,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 06:12:07,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:07,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:07,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:07,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 47 [2021-11-20 06:12:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:07,775 INFO L354 Elim1Store]: treesize reduction 116, result has 19.4 percent of original size [2021-11-20 06:12:07,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 85 treesize of output 69 [2021-11-20 06:12:08,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:08,164 INFO L354 Elim1Store]: treesize reduction 194, result has 16.7 percent of original size [2021-11-20 06:12:08,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 88 [2021-11-20 06:12:08,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:12:08,652 INFO L354 Elim1Store]: treesize reduction 394, result has 12.6 percent of original size [2021-11-20 06:12:08,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 111 [2021-11-20 06:12:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:12:25,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:12:37,332 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_178| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) c_~N~0))) is different from false [2021-11-20 06:13:04,680 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int)) (or (= c_~N~0 (select (let ((.cse0 (let ((.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:13:38,690 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (= c_~N~0 (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-11-20 06:14:13,141 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (= c_~N~0 (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse3 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)))) is different from false [2021-11-20 06:14:15,429 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= c_~N~0 (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse3 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-11-20 06:15:34,521 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| 2) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)) (= (let ((.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (store .cse4 .cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) .cse5)) c_~N~0))) is different from false [2021-11-20 06:15:48,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| 2) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)) (let ((.cse1 (let ((.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (+ (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse9)))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (let ((.cse7 (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse9))) (store .cse7 .cse8 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse6 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) .cse8))) (.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))))) is different from false [2021-11-20 06:17:52,089 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (.cse0 (let ((.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (+ 2 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse9)))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (let ((.cse7 (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse9))) (store .cse7 .cse8 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse6 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) .cse8)))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| 2) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)))) is different from false [2021-11-20 06:19:30,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_179| Int) (|v_ULTIMATE.start_main_~i~0#1_178| Int) (|v_ULTIMATE.start_main_~i~0#1_181| Int) (|v_ULTIMATE.start_main_~i~0#1_180| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_179| (+ |v_ULTIMATE.start_main_~i~0#1_180| 1)) (< |v_ULTIMATE.start_main_~i~0#1_178| (+ |v_ULTIMATE.start_main_~i~0#1_179| 1)) (< |v_ULTIMATE.start_main_~i~0#1_181| 2) (< |v_ULTIMATE.start_main_~i~0#1_180| (+ |v_ULTIMATE.start_main_~i~0#1_181| 1)) (let ((.cse1 (let ((.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (+ (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 4))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse9)))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (let ((.cse7 (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse9))) (store .cse7 .cse8 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse6 (+ (* |v_ULTIMATE.start_main_~i~0#1_181| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_180| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_179| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_178| 4)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) .cse8))) (.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 4))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))))) is different from false