./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/eureka_01-1.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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/eureka_01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/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 a7ef5e9072271cbf0486c6be0aa2bd26b235c6b4341d8940adfe18a5a48a6524 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:31:03,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:31:03,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:31:03,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:31:03,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:31:03,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:31:03,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:31:03,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:31:03,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:31:03,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:31:03,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:31:03,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:31:03,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:31:03,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:31:03,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:31:03,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:31:03,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:31:03,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:31:03,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:31:03,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:31:03,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:31:03,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:31:03,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:31:03,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:31:03,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:31:03,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:31:03,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:31:03,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:31:03,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:31:03,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:31:03,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:31:03,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:31:03,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:31:03,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:31:03,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:31:03,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:31:03,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:31:03,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:31:03,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:31:03,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:31:03,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:31:03,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:31:03,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:31:03,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:31:03,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:31:03,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:31:03,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:31:03,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:31:03,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:31:03,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:31:03,924 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:31:03,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:31:03,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:31:03,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:31:03,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:31:03,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:31:03,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:31:03,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:31:03,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:31:03,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:31:03,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:31:03,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:31:03,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:31:03,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:31:03,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:31:03,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:31:03,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:03,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:31:03,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:31:03,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:31:03,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:31:03,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:31:03,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:31:03,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:31:03,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:31:03,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:31:03,932 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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7ef5e9072271cbf0486c6be0aa2bd26b235c6b4341d8940adfe18a5a48a6524 [2021-11-20 06:31:04,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:31:04,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:31:04,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:31:04,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:31:04,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:31:04,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loops/eureka_01-1.c [2021-11-20 06:31:04,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/data/73032c71f/7791bc835fb440dab08ea233032390d5/FLAGa1a25aa08 [2021-11-20 06:31:04,885 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:31:04,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/sv-benchmarks/c/loops/eureka_01-1.c [2021-11-20 06:31:04,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/data/73032c71f/7791bc835fb440dab08ea233032390d5/FLAGa1a25aa08 [2021-11-20 06:31:05,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/data/73032c71f/7791bc835fb440dab08ea233032390d5 [2021-11-20 06:31:05,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:31:05,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:31:05,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:05,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:31:05,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:31:05,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595074ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05, skipping insertion in model container [2021-11-20 06:31:05,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:31:05,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:31:05,452 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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/sv-benchmarks/c/loops/eureka_01-1.c[446,459] [2021-11-20 06:31:05,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:05,519 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:31:05,537 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_42cc8fd6-a514-4d09-86b1-928e7c4cf730/sv-benchmarks/c/loops/eureka_01-1.c[446,459] [2021-11-20 06:31:05,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:05,606 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:31:05,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05 WrapperNode [2021-11-20 06:31:05,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:05,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:05,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:31:05,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:31:05,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,678 INFO L137 Inliner]: procedures = 15, calls = 98, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 205 [2021-11-20 06:31:05,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:05,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:31:05,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:31:05,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:31:05,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:31:05,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:31:05,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:31:05,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:31:05,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (1/1) ... [2021-11-20 06:31:05,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:05,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:05,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:31:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:31:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:31:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:31:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:31:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:31:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:31:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:31:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:31:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:31:05,938 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:31:05,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:31:06,259 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:31:06,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:31:06,265 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 06:31:06,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:06 BoogieIcfgContainer [2021-11-20 06:31:06,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:31:06,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:31:06,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:31:06,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:31:06,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:31:05" (1/3) ... [2021-11-20 06:31:06,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca2dd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:06, skipping insertion in model container [2021-11-20 06:31:06,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:05" (2/3) ... [2021-11-20 06:31:06,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca2dd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:06, skipping insertion in model container [2021-11-20 06:31:06,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:06" (3/3) ... [2021-11-20 06:31:06,291 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_01-1.c [2021-11-20 06:31:06,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:31:06,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:31:06,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:31:06,389 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 06:31:06,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:31:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:31:06,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:06,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:06,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1963003136, now seen corresponding path program 1 times [2021-11-20 06:31:06,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:06,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602162745] [2021-11-20 06:31:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:06,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:06,794 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 06:31:06,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:06,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602162745] [2021-11-20 06:31:06,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602162745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:06,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:06,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:06,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641381417] [2021-11-20 06:31:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:06,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:31:06,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:06,842 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:06,938 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2021-11-20 06:31:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:06,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 06:31:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:06,948 INFO L225 Difference]: With dead ends: 89 [2021-11-20 06:31:06,949 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 06:31:06,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:06,955 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:06,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 67 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 06:31:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2021-11-20 06:31:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 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 06:31:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-20 06:31:06,988 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 13 [2021-11-20 06:31:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:06,989 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-20 06:31:06,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-20 06:31:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:31:06,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:06,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:06,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:31:06,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 629591390, now seen corresponding path program 1 times [2021-11-20 06:31:06,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:06,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292784829] [2021-11-20 06:31:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:06,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:07,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:07,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292784829] [2021-11-20 06:31:07,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292784829] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768108817] [2021-11-20 06:31:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:07,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:07,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:07,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:07,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:31:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:07,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:31:07,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:07,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 06:31:07,655 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 33 treesize of output 25 [2021-11-20 06:31:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:07,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:07,824 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 14 treesize of output 12 [2021-11-20 06:31:07,830 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 22 treesize of output 20 [2021-11-20 06:31:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:07,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768108817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:07,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:07,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-11-20 06:31:07,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494880019] [2021-11-20 06:31:07,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:07,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:31:07,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:31:07,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:31:07,874 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 06:31:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:08,102 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2021-11-20 06:31:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:31:08,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:31:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:08,105 INFO L225 Difference]: With dead ends: 84 [2021-11-20 06:31:08,105 INFO L226 Difference]: Without dead ends: 82 [2021-11-20 06:31:08,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:31:08,107 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:08,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 120 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-20 06:31:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 43. [2021-11-20 06:31:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 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 06:31:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-20 06:31:08,118 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 19 [2021-11-20 06:31:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:08,119 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-20 06:31:08,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 06:31:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2021-11-20 06:31:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:31:08,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:08,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:08,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:08,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash -381525860, now seen corresponding path program 1 times [2021-11-20 06:31:08,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:08,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361101412] [2021-11-20 06:31:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:08,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:08,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:08,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361101412] [2021-11-20 06:31:08,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361101412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:08,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:08,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:31:08,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124170295] [2021-11-20 06:31:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:08,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:31:08,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:08,394 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:08,418 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2021-11-20 06:31:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:31:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:31:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:08,420 INFO L225 Difference]: With dead ends: 66 [2021-11-20 06:31:08,420 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 06:31:08,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:08,422 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:08,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 06:31:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-11-20 06:31:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-11-20 06:31:08,441 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 19 [2021-11-20 06:31:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:08,441 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-11-20 06:31:08,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-11-20 06:31:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 06:31:08,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:08,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:08,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:31:08,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1960843935, now seen corresponding path program 1 times [2021-11-20 06:31:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556469418] [2021-11-20 06:31:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:08,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:08,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:08,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556469418] [2021-11-20 06:31:08,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556469418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022423556] [2021-11-20 06:31:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:08,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:08,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:08,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:31:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:31:08,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:08,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:08,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022423556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:08,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2021-11-20 06:31:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483197373] [2021-11-20 06:31:08,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:08,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:31:08,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:31:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:31:08,825 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 06:31:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:09,000 INFO L93 Difference]: Finished difference Result 114 states and 146 transitions. [2021-11-20 06:31:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:31:09,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 22 [2021-11-20 06:31:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:09,002 INFO L225 Difference]: With dead ends: 114 [2021-11-20 06:31:09,002 INFO L226 Difference]: Without dead ends: 86 [2021-11-20 06:31:09,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:31:09,003 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 61 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:09,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 155 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-20 06:31:09,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2021-11-20 06:31:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 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 06:31:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-11-20 06:31:09,018 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 22 [2021-11-20 06:31:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:09,019 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-11-20 06:31:09,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 06:31:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-11-20 06:31:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 06:31:09,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:09,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:09,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:09,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:09,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1926841972, now seen corresponding path program 1 times [2021-11-20 06:31:09,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830639470] [2021-11-20 06:31:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:09,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:09,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830639470] [2021-11-20 06:31:09,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830639470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:09,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889170721] [2021-11-20 06:31:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:09,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:09,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:09,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:09,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:31:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:09,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:31:09,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:09,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:09,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889170721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:09,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:09,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:31:09,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667098907] [2021-11-20 06:31:09,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:09,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:31:09,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:09,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:31:09,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:31:09,577 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:09,781 INFO L93 Difference]: Finished difference Result 181 states and 231 transitions. [2021-11-20 06:31:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:31:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-20 06:31:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:09,787 INFO L225 Difference]: With dead ends: 181 [2021-11-20 06:31:09,787 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 06:31:09,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 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 06:31:09,789 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 117 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:09,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 187 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 06:31:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 75. [2021-11-20 06:31:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 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 06:31:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-11-20 06:31:09,813 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 22 [2021-11-20 06:31:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:09,813 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-11-20 06:31:09,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-11-20 06:31:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:31:09,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:09,815 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:09,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:10,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:10,033 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1234267636, now seen corresponding path program 1 times [2021-11-20 06:31:10,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450032685] [2021-11-20 06:31:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:10,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:10,100 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 06:31:10,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:10,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450032685] [2021-11-20 06:31:10,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450032685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:10,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170051607] [2021-11-20 06:31:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:10,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:10,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:10,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:10,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:31:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:10,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:31:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:10,345 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 06:31:10,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:10,427 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 06:31:10,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170051607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:10,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:10,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:31:10,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990507081] [2021-11-20 06:31:10,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:10,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:31:10,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:31:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:31:10,430 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 06:31:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:10,602 INFO L93 Difference]: Finished difference Result 206 states and 263 transitions. [2021-11-20 06:31:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:31:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-20 06:31:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:10,604 INFO L225 Difference]: With dead ends: 206 [2021-11-20 06:31:10,604 INFO L226 Difference]: Without dead ends: 146 [2021-11-20 06:31:10,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 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 06:31:10,607 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 101 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:10,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 101 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-20 06:31:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 92. [2021-11-20 06:31:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 91 states have internal predecessors, (119), 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 06:31:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2021-11-20 06:31:10,638 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 23 [2021-11-20 06:31:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:10,639 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2021-11-20 06:31:10,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 06:31:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2021-11-20 06:31:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:31:10,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:10,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:10,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 06:31:10,865 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1741027445, now seen corresponding path program 1 times [2021-11-20 06:31:10,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:10,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173724905] [2021-11-20 06:31:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:10,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:11,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173724905] [2021-11-20 06:31:11,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173724905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214305250] [2021-11-20 06:31:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:11,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:11,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:11,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:31:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:11,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:31:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:11,548 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:31:11,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 06:31:11,658 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:31:11,661 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 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 06:31:12,071 INFO L354 Elim1Store]: treesize reduction 228, result has 9.9 percent of original size [2021-11-20 06:31:12,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 74 treesize of output 65 [2021-11-20 06:31:12,496 INFO L354 Elim1Store]: treesize reduction 53, result has 15.9 percent of original size [2021-11-20 06:31:12,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 51 [2021-11-20 06:31:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:12,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:14,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214305250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:14,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:14,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2021-11-20 06:31:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35640183] [2021-11-20 06:31:14,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 06:31:14,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 06:31:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=461, Unknown=1, NotChecked=0, Total=552 [2021-11-20 06:31:14,278 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:15,173 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2021-11-20 06:31:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:31:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 06:31:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:15,176 INFO L225 Difference]: With dead ends: 160 [2021-11-20 06:31:15,177 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 06:31:15,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=265, Invalid=1216, Unknown=1, NotChecked=0, Total=1482 [2021-11-20 06:31:15,178 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:15,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 294 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 175 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2021-11-20 06:31:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 06:31:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 101. [2021-11-20 06:31:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 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 06:31:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-11-20 06:31:15,199 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 25 [2021-11-20 06:31:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:15,201 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-11-20 06:31:15,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2021-11-20 06:31:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:31:15,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:15,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:15,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:15,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash -858936254, now seen corresponding path program 2 times [2021-11-20 06:31:15,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:15,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660641556] [2021-11-20 06:31:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:15,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:15,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660641556] [2021-11-20 06:31:15,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660641556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851870895] [2021-11-20 06:31:15,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:31:15,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:15,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:15,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:31:15,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:31:15,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:15,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:31:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:15,640 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 15 treesize of output 11 [2021-11-20 06:31:15,705 INFO L354 Elim1Store]: treesize reduction 46, result has 23.3 percent of original size [2021-11-20 06:31:15,705 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 39 treesize of output 38 [2021-11-20 06:31:15,819 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 33 treesize of output 25 [2021-11-20 06:31:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:15,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:17,982 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_66| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((~INFINITY~0 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_66| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) is different from false [2021-11-20 06:31:17,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-20 06:31:17,995 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 69 treesize of output 67 [2021-11-20 06:31:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 1 not checked. [2021-11-20 06:31:18,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851870895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:18,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:18,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2021-11-20 06:31:18,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856470979] [2021-11-20 06:31:18,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:18,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:31:18,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:31:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2021-11-20 06:31:18,046 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 06:31:20,068 WARN L838 $PredicateComparison]: unable to prove that (and (= (+ (* 4 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_66| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((~INFINITY~0 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_66| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0)) is different from false [2021-11-20 06:31:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:20,290 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2021-11-20 06:31:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:31:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 06:31:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:20,292 INFO L225 Difference]: With dead ends: 160 [2021-11-20 06:31:20,292 INFO L226 Difference]: Without dead ends: 158 [2021-11-20 06:31:20,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=81, Invalid=231, Unknown=2, NotChecked=66, Total=380 [2021-11-20 06:31:20,293 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 86 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:20,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 162 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 222 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2021-11-20 06:31:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-20 06:31:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2021-11-20 06:31:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 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 06:31:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2021-11-20 06:31:20,307 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 25 [2021-11-20 06:31:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:20,307 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2021-11-20 06:31:20,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 06:31:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2021-11-20 06:31:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 06:31:20,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:20,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:20,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-20 06:31:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:20,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1096380170, now seen corresponding path program 2 times [2021-11-20 06:31:20,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:20,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137484979] [2021-11-20 06:31:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:20,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:20,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:20,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137484979] [2021-11-20 06:31:20,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137484979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665161339] [2021-11-20 06:31:20,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:31:20,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:20,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:20,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:31:20,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:31:20,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:31:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:20,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:20,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665161339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:20,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:20,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:31:20,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552448284] [2021-11-20 06:31:20,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:20,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:31:20,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:20,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:31:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:31:20,860 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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 06:31:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:21,080 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2021-11-20 06:31:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:31:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) Word has length 28 [2021-11-20 06:31:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:21,082 INFO L225 Difference]: With dead ends: 199 [2021-11-20 06:31:21,082 INFO L226 Difference]: Without dead ends: 186 [2021-11-20 06:31:21,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:31:21,083 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 136 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:21,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 206 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-20 06:31:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 132. [2021-11-20 06:31:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 131 states have internal predecessors, (172), 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 06:31:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 172 transitions. [2021-11-20 06:31:21,104 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 172 transitions. Word has length 28 [2021-11-20 06:31:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:21,104 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 172 transitions. [2021-11-20 06:31:21,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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 06:31:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 172 transitions. [2021-11-20 06:31:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:31:21,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:21,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:21,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:21,319 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 160714710, now seen corresponding path program 2 times [2021-11-20 06:31:21,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335305695] [2021-11-20 06:31:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:21,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:31:21,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:21,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335305695] [2021-11-20 06:31:21,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335305695] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:21,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678461075] [2021-11-20 06:31:21,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:31:21,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:21,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:21,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:31:21,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:31:21,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:21,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:31:21,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:31:21,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:31:21,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678461075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:21,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:31:21,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-20 06:31:21,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178939882] [2021-11-20 06:31:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:21,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:31:21,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:21,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:31:21,522 INFO L87 Difference]: Start difference. First operand 132 states and 172 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 06:31:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:21,575 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2021-11-20 06:31:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:31:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-20 06:31:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:21,576 INFO L225 Difference]: With dead ends: 230 [2021-11-20 06:31:21,576 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 06:31:21,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:31:21,581 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:21,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 06:31:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-11-20 06:31:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 115 states have internal predecessors, (147), 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 06:31:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2021-11-20 06:31:21,597 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 29 [2021-11-20 06:31:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:21,598 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2021-11-20 06:31:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 06:31:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2021-11-20 06:31:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:31:21,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:21,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:21,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:21,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:21,813 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:21,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash 583416536, now seen corresponding path program 1 times [2021-11-20 06:31:21,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:21,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323158046] [2021-11-20 06:31:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:21,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:21,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323158046] [2021-11-20 06:31:21,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323158046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:21,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504803385] [2021-11-20 06:31:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:21,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:21,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:21,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:21,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:31:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:22,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:31:22,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:22,103 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 17 treesize of output 13 [2021-11-20 06:31:22,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-20 06:31:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:22,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:22,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:31:22,364 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 32 treesize of output 28 [2021-11-20 06:31:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:22,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504803385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:22,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:22,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-11-20 06:31:22,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238241863] [2021-11-20 06:31:22,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:22,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 06:31:22,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:31:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:31:22,449 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 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 06:31:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:22,864 INFO L93 Difference]: Finished difference Result 185 states and 228 transitions. [2021-11-20 06:31:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:31:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 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 29 [2021-11-20 06:31:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:22,866 INFO L225 Difference]: With dead ends: 185 [2021-11-20 06:31:22,866 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 06:31:22,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 06:31:22,868 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:22,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 215 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:31:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 06:31:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 120. [2021-11-20 06:31:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.26890756302521) internal successors, (151), 119 states have internal predecessors, (151), 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 06:31:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2021-11-20 06:31:22,885 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 29 [2021-11-20 06:31:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:22,885 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2021-11-20 06:31:22,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 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 06:31:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2021-11-20 06:31:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:31:22,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:22,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:22,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:23,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 06:31:23,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1240772930, now seen corresponding path program 3 times [2021-11-20 06:31:23,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354305776] [2021-11-20 06:31:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:23,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:23,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:23,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354305776] [2021-11-20 06:31:23,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354305776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:23,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578255956] [2021-11-20 06:31:23,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:31:23,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:23,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:23,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:23,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:31:23,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 06:31:23,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:23,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-20 06:31:23,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:23,933 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 18 treesize of output 16 [2021-11-20 06:31:23,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:31:23,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 06:31:24,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:31:24,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:31:24,157 INFO L354 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2021-11-20 06:31:24,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 51 [2021-11-20 06:31:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:31:24,444 INFO L354 Elim1Store]: treesize reduction 246, result has 16.9 percent of original size [2021-11-20 06:31:24,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 63 treesize of output 81 [2021-11-20 06:31:26,424 INFO L354 Elim1Store]: treesize reduction 81, result has 9.0 percent of original size [2021-11-20 06:31:26,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 54 [2021-11-20 06:31:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:26,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:29,502 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_33| Int)) (or (<= |v_ULTIMATE.start_main_~j~0#1_33| 0) (< (+ |c_ULTIMATE.start_main_~j~0#1| 1) |v_ULTIMATE.start_main_~j~0#1_33|) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_33| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) is different from false [2021-11-20 06:31:38,547 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_23| Int) (|v_ULTIMATE.start_main_~j~0#1_33| Int)) (or (<= |v_ULTIMATE.start_main_~j~0#1_33| 0) (< 1 |v_ULTIMATE.start_main_~j~0#1_33|) (< |v_ULTIMATE.start_main_~x~0#1_23| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_23| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_33| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) is different from false [2021-11-20 06:31:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-20 06:31:40,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578255956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:40,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:40,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 41 [2021-11-20 06:31:40,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787420992] [2021-11-20 06:31:40,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:40,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-20 06:31:40,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-20 06:31:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1192, Unknown=6, NotChecked=150, Total=1640 [2021-11-20 06:31:40,854 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 41 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 41 states have internal predecessors, (79), 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 06:31:41,511 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_23| Int) (|v_ULTIMATE.start_main_~j~0#1_33| Int)) (or (<= |v_ULTIMATE.start_main_~j~0#1_33| 0) (< 1 |v_ULTIMATE.start_main_~j~0#1_33|) (< |v_ULTIMATE.start_main_~x~0#1_23| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_23| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_33| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0) (= (select .cse1 |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3) (<= 0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|))) is different from false [2021-11-20 06:31:42,083 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_23| Int) (|v_ULTIMATE.start_main_~j~0#1_33| Int)) (or (<= |v_ULTIMATE.start_main_~j~0#1_33| 0) (< 1 |v_ULTIMATE.start_main_~j~0#1_33|) (< |v_ULTIMATE.start_main_~x~0#1_23| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_23| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_33| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select .cse1 |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3))) is different from false [2021-11-20 06:31:42,685 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|)) (.cse0 (select .cse2 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))))) (and (<= .cse0 |c_ULTIMATE.start_main_~x~0#1|) (= (select .cse1 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~x~0#1| 1) (= (select (store .cse1 (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) 0) 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3) (= |c_ULTIMATE.start_main_~j~0#1| 0) (= .cse0 1) (forall ((|v_ULTIMATE.start_main_~j~0#1_33| Int)) (or (<= |v_ULTIMATE.start_main_~j~0#1_33| 0) (< (+ |c_ULTIMATE.start_main_~j~0#1| 1) |v_ULTIMATE.start_main_~j~0#1_33|) (<= 0 (select (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse3 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse3) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_33| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (not (= |c_ULTIMATE.start_main_~#distance~0#1.base| |c_ULTIMATE.start_main_~#Dest~0#1.base|))))) is different from false [2021-11-20 06:31:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:44,284 INFO L93 Difference]: Finished difference Result 153 states and 188 transitions. [2021-11-20 06:31:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 06:31:44,285 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 41 states have internal predecessors, (79), 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 31 [2021-11-20 06:31:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:44,286 INFO L225 Difference]: With dead ends: 153 [2021-11-20 06:31:44,286 INFO L226 Difference]: Without dead ends: 126 [2021-11-20 06:31:44,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=460, Invalid=2001, Unknown=9, NotChecked=500, Total=2970 [2021-11-20 06:31:44,288 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 32 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:44,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 321 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 233 Unchecked, 0.1s Time] [2021-11-20 06:31:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-20 06:31:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-20 06:31:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 122 states have internal predecessors, (155), 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 06:31:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2021-11-20 06:31:44,303 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 31 [2021-11-20 06:31:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2021-11-20 06:31:44,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 41 states have internal predecessors, (79), 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 06:31:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2021-11-20 06:31:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:31:44,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:44,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:44,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:44,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:44,509 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2058421380, now seen corresponding path program 1 times [2021-11-20 06:31:44,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:44,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784335419] [2021-11-20 06:31:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:44,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:44,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784335419] [2021-11-20 06:31:44,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784335419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908029173] [2021-11-20 06:31:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:44,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:44,938 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:44,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:31:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:45,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:31:45,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:45,033 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 18 treesize of output 16 [2021-11-20 06:31:45,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:31:45,335 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-20 06:31:45,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 41 [2021-11-20 06:31:45,749 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:31:45,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 42 [2021-11-20 06:31:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:45,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:46,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908029173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:46,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:46,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2021-11-20 06:31:46,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733637334] [2021-11-20 06:31:46,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:46,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 06:31:46,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 06:31:46,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:31:46,046 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 06:31:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:46,645 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2021-11-20 06:31:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:31:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 31 [2021-11-20 06:31:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:46,647 INFO L225 Difference]: With dead ends: 152 [2021-11-20 06:31:46,647 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 06:31:46,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 06:31:46,654 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 90 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:46,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 231 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 148 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2021-11-20 06:31:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 06:31:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2021-11-20 06:31:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.272) internal successors, (159), 125 states have internal predecessors, (159), 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 06:31:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 159 transitions. [2021-11-20 06:31:46,672 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 159 transitions. Word has length 31 [2021-11-20 06:31:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:46,673 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 159 transitions. [2021-11-20 06:31:46,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 06:31:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 159 transitions. [2021-11-20 06:31:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:31:46,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:46,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:46,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:46,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:31:46,901 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash -956621735, now seen corresponding path program 1 times [2021-11-20 06:31:46,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:46,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782611844] [2021-11-20 06:31:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:46,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:31:46,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:46,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782611844] [2021-11-20 06:31:46,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782611844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:46,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:46,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:46,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697855382] [2021-11-20 06:31:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:46,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:31:46,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:46,957 INFO L87 Difference]: Start difference. First operand 126 states and 159 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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 06:31:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:46,995 INFO L93 Difference]: Finished difference Result 202 states and 252 transitions. [2021-11-20 06:31:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:31:46,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:31:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:46,997 INFO L225 Difference]: With dead ends: 202 [2021-11-20 06:31:46,997 INFO L226 Difference]: Without dead ends: 146 [2021-11-20 06:31:46,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:46,998 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:46,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-20 06:31:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2021-11-20 06:31:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.264) internal successors, (158), 125 states have internal predecessors, (158), 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 06:31:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 158 transitions. [2021-11-20 06:31:47,016 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 158 transitions. Word has length 31 [2021-11-20 06:31:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:47,016 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 158 transitions. [2021-11-20 06:31:47,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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 06:31:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 158 transitions. [2021-11-20 06:31:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:31:47,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:47,018 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:47,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:31:47,018 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1777758610, now seen corresponding path program 2 times [2021-11-20 06:31:47,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883806027] [2021-11-20 06:31:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:47,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:47,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:47,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883806027] [2021-11-20 06:31:47,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883806027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:47,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666187074] [2021-11-20 06:31:47,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:31:47,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:47,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:47,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:31:47,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:31:47,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:47,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:31:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:47,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:31:47,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666187074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:47,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:47,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-20 06:31:47,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787963545] [2021-11-20 06:31:47,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:47,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:31:47,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:31:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:31:47,383 INFO L87 Difference]: Start difference. First operand 126 states and 158 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 06:31:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:47,633 INFO L93 Difference]: Finished difference Result 408 states and 511 transitions. [2021-11-20 06:31:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:31:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 33 [2021-11-20 06:31:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:47,636 INFO L225 Difference]: With dead ends: 408 [2021-11-20 06:31:47,636 INFO L226 Difference]: Without dead ends: 303 [2021-11-20 06:31:47,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:31:47,640 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 243 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:47,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 143 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-20 06:31:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 209. [2021-11-20 06:31:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.2836538461538463) internal successors, (267), 208 states have internal predecessors, (267), 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 06:31:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2021-11-20 06:31:47,668 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 33 [2021-11-20 06:31:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:47,669 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2021-11-20 06:31:47,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 06:31:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2021-11-20 06:31:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:31:47,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:47,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:47,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:47,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:31:47,885 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1071791489, now seen corresponding path program 4 times [2021-11-20 06:31:47,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:47,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591435073] [2021-11-20 06:31:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:47,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:47,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591435073] [2021-11-20 06:31:47,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591435073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289282823] [2021-11-20 06:31:47,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:31:47,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:47,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:47,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 06:31:48,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:31:48,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:48,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:31:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:48,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289282823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:31:48,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:31:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-20 06:31:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604815334] [2021-11-20 06:31:48,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:31:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:31:48,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:31:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:31:48,239 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:48,513 INFO L93 Difference]: Finished difference Result 492 states and 617 transitions. [2021-11-20 06:31:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:31:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 06:31:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:48,518 INFO L225 Difference]: With dead ends: 492 [2021-11-20 06:31:48,519 INFO L226 Difference]: Without dead ends: 470 [2021-11-20 06:31:48,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-11-20 06:31:48,521 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 164 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:48,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 260 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-20 06:31:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 294. [2021-11-20 06:31:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.3139931740614335) internal successors, (385), 293 states have internal predecessors, (385), 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 06:31:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 385 transitions. [2021-11-20 06:31:48,565 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 385 transitions. Word has length 34 [2021-11-20 06:31:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:48,566 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 385 transitions. [2021-11-20 06:31:48,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 385 transitions. [2021-11-20 06:31:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:31:48,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:48,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:48,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:31:48,781 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -715108188, now seen corresponding path program 2 times [2021-11-20 06:31:48,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206071648] [2021-11-20 06:31:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:48,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:49,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206071648] [2021-11-20 06:31:49,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206071648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078957105] [2021-11-20 06:31:49,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:31:49,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:49,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:49,881 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:49,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:31:49,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:31:49,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:31:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:31:49,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:49,967 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 18 treesize of output 16 [2021-11-20 06:31:50,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:31:50,155 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-20 06:31:50,156 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 33 treesize of output 35 [2021-11-20 06:31:50,323 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-20 06:31:50,323 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 37 treesize of output 35 [2021-11-20 06:31:50,593 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-20 06:31:50,593 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 57 treesize of output 54 [2021-11-20 06:31:51,167 INFO L354 Elim1Store]: treesize reduction 65, result has 5.8 percent of original size [2021-11-20 06:31:51,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 48 [2021-11-20 06:31:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:31:51,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:51,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (or (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))))) is different from false [2021-11-20 06:31:52,268 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (or (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) is different from false [2021-11-20 06:31:53,035 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) is different from false [2021-11-20 06:31:55,065 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_39| Int)) (or (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))))) is different from false [2021-11-20 06:31:55,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) is different from false [2021-11-20 06:31:58,014 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int) (~INFINITY~0 Int)) (let ((.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (let ((.cse0 (store .cse1 (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))))) is different from false [2021-11-20 06:32:00,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_132| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_132| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int) (~INFINITY~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_132| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (let ((.cse1 (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse1 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))))))) is different from false [2021-11-20 06:32:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 17 not checked. [2021-11-20 06:32:06,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078957105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:32:06,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:32:06,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2021-11-20 06:32:06,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202460722] [2021-11-20 06:32:06,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:32:06,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-20 06:32:06,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-20 06:32:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=773, Unknown=9, NotChecked=448, Total=1406 [2021-11-20 06:32:06,365 INFO L87 Difference]: Start difference. First operand 294 states and 385 transitions. Second operand has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:08,403 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_132| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_132| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int) (~INFINITY~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_132| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (let ((.cse1 (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse1 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))))))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:32:09,378 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (let ((.cse2 (store .cse1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) c_~INFINITY~0)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))) (and (<= 1 .cse0) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse1 |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= (select .cse1 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= (select .cse2 0) 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int) (~INFINITY~0 Int)) (let ((.cse4 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (let ((.cse3 (store .cse4 (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse3) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse3 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse4) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse2) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= .cse0 1)))) is different from false [2021-11-20 06:32:10,570 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (let ((.cse1 (store .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) c_~INFINITY~0))) (and (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= (select .cse1 0) 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int) (~INFINITY~0 Int)) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (let ((.cse2 (store .cse3 (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse2) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse2 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse3) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)))) is different from false [2021-11-20 06:32:11,273 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int) (|v_ULTIMATE.start_main_~x~0#1_39| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:32:13,434 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) 0) 0) (<= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~j~0#1| 0) (<= 0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~x~0#1_39| Int)) (or (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_39| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (<= 0 (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) (< |v_ULTIMATE.start_main_~x~0#1_39| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))))))) is different from false [2021-11-20 06:32:14,201 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|)) (.cse0 (select .cse3 |c_ULTIMATE.start_main_~#Dest~0#1.offset|))) (and (<= 1 .cse0) (<= .cse0 |c_ULTIMATE.start_main_~x~0#1|) (= (select .cse1 |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (or (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse2) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (store .cse2 (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= (select (store .cse1 (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) 0) 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (or (= (select .cse3 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) |c_ULTIMATE.start_main_~x~0#1|) (= .cse0 1)) (= |c_ULTIMATE.start_main_~j~0#1| 0) (<= 0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) is different from false [2021-11-20 06:32:14,816 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (<= 1 (select .cse0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (= (select .cse1 |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= (select .cse1 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (or (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (and (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) |ULTIMATE.start_main_~x~0#1|) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 1) 0))) (not (= (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* 4 (select .cse0 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))))) 0)) (= |c_ULTIMATE.start_main_~j~0#1| 0) (<= 0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|))) is different from false [2021-11-20 06:32:15,390 WARN L838 $PredicateComparison]: unable to prove that (and (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (or (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (and (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) |ULTIMATE.start_main_~x~0#1|) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 1) 0)))) is different from false [2021-11-20 06:32:16,011 WARN L838 $PredicateComparison]: unable to prove that (and (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (forall ((|v_ULTIMATE.start_main_~x~0#1_38| Int)) (or (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_38| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_38| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (and (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) |ULTIMATE.start_main_~x~0#1|) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 1) 0))) (= |c_ULTIMATE.start_main_~j~0#1| 0)) is different from false [2021-11-20 06:32:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:16,229 INFO L93 Difference]: Finished difference Result 335 states and 433 transitions. [2021-11-20 06:32:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:32:16,229 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 06:32:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:16,232 INFO L225 Difference]: With dead ends: 335 [2021-11-20 06:32:16,232 INFO L226 Difference]: Without dead ends: 333 [2021-11-20 06:32:16,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=293, Invalid=1085, Unknown=18, NotChecked=1360, Total=2756 [2021-11-20 06:32:16,235 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:16,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 259 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 91 Invalid, 0 Unknown, 409 Unchecked, 0.1s Time] [2021-11-20 06:32:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-20 06:32:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 324. [2021-11-20 06:32:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.303405572755418) internal successors, (421), 323 states have internal predecessors, (421), 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 06:32:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 421 transitions. [2021-11-20 06:32:16,278 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 421 transitions. Word has length 34 [2021-11-20 06:32:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:16,279 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 421 transitions. [2021-11-20 06:32:16,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 421 transitions. [2021-11-20 06:32:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:32:16,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:16,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:32:16,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:32:16,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:16,497 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:32:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1532756638, now seen corresponding path program 1 times [2021-11-20 06:32:16,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048654254] [2021-11-20 06:32:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:16,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:32:17,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048654254] [2021-11-20 06:32:17,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048654254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:32:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603279582] [2021-11-20 06:32:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:17,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:32:17,027 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:32:17,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 06:32:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:32:17,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:32:17,107 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 18 treesize of output 16 [2021-11-20 06:32:17,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:32:17,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:17,281 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-20 06:32:17,281 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 33 treesize of output 35 [2021-11-20 06:32:17,594 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-20 06:32:17,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 41 [2021-11-20 06:32:18,175 INFO L354 Elim1Store]: treesize reduction 92, result has 8.0 percent of original size [2021-11-20 06:32:18,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 64 [2021-11-20 06:32:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:32:18,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:32:21,254 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_142| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_142| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((~INFINITY~0 Int)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_142| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) is different from false [2021-11-20 06:32:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2021-11-20 06:32:23,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603279582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:32:23,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:32:23,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2021-11-20 06:32:23,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736682169] [2021-11-20 06:32:23,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:32:23,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:32:23,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:32:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=456, Unknown=3, NotChecked=44, Total=600 [2021-11-20 06:32:23,361 INFO L87 Difference]: Start difference. First operand 324 states and 421 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:25,407 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_142| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_142| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((~INFINITY~0 Int)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_142| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))) (<= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (<= 0 |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) is different from false [2021-11-20 06:32:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:26,724 INFO L93 Difference]: Finished difference Result 467 states and 589 transitions. [2021-11-20 06:32:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 06:32:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 06:32:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:26,729 INFO L225 Difference]: With dead ends: 467 [2021-11-20 06:32:26,729 INFO L226 Difference]: Without dead ends: 465 [2021-11-20 06:32:26,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=459, Invalid=1707, Unknown=4, NotChecked=182, Total=2352 [2021-11-20 06:32:26,731 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 266 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:26,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 353 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 272 Invalid, 0 Unknown, 380 Unchecked, 0.3s Time] [2021-11-20 06:32:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-20 06:32:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 368. [2021-11-20 06:32:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.3160762942779292) internal successors, (483), 367 states have internal predecessors, (483), 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 06:32:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 483 transitions. [2021-11-20 06:32:26,796 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 483 transitions. Word has length 34 [2021-11-20 06:32:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:26,796 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 483 transitions. [2021-11-20 06:32:26,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 483 transitions. [2021-11-20 06:32:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:32:26,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:26,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:32:26,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:32:27,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:32:27,013 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:32:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1136182421, now seen corresponding path program 5 times [2021-11-20 06:32:27,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:27,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981145833] [2021-11-20 06:32:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:27,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:32:28,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981145833] [2021-11-20 06:32:28,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981145833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:32:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45727900] [2021-11-20 06:32:28,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:32:28,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:28,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:32:28,305 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:32:28,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 06:32:28,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-20 06:32:28,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:32:28,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-20 06:32:28,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:32:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,640 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:32:28,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 06:32:28,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:28,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:28,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:28,841 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 06:32:28,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 06:32:29,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:29,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:29,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:29,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:29,468 INFO L354 Elim1Store]: treesize reduction 136, result has 21.4 percent of original size [2021-11-20 06:32:29,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 99 [2021-11-20 06:32:30,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:30,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:30,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:30,085 INFO L354 Elim1Store]: treesize reduction 216, result has 17.9 percent of original size [2021-11-20 06:32:30,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 121 [2021-11-20 06:32:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:30,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:30,785 INFO L354 Elim1Store]: treesize reduction 640, result has 10.0 percent of original size [2021-11-20 06:32:30,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 65 case distinctions, treesize of input 158 treesize of output 154 [2021-11-20 06:32:32,719 INFO L354 Elim1Store]: treesize reduction 212, result has 5.8 percent of original size [2021-11-20 06:32:32,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 126 treesize of output 92 [2021-11-20 06:32:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:32:32,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:32:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:32:34,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45727900] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:32:34,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:32:34,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 46 [2021-11-20 06:32:34,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674448199] [2021-11-20 06:32:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:32:34,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 06:32:34,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:34,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 06:32:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1758, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 06:32:34,879 INFO L87 Difference]: Start difference. First operand 368 states and 483 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:38,130 INFO L93 Difference]: Finished difference Result 428 states and 553 transitions. [2021-11-20 06:32:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:32:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-20 06:32:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:38,133 INFO L225 Difference]: With dead ends: 428 [2021-11-20 06:32:38,133 INFO L226 Difference]: Without dead ends: 391 [2021-11-20 06:32:38,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=716, Invalid=3444, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 06:32:38,136 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 127 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:38,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 550 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 403 Invalid, 0 Unknown, 226 Unchecked, 0.8s Time] [2021-11-20 06:32:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-20 06:32:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 374. [2021-11-20 06:32:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.3163538873994638) internal successors, (491), 373 states have internal predecessors, (491), 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 06:32:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 491 transitions. [2021-11-20 06:32:38,181 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 491 transitions. Word has length 37 [2021-11-20 06:32:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:38,182 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 491 transitions. [2021-11-20 06:32:38,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 491 transitions. [2021-11-20 06:32:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:32:38,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:38,184 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:32:38,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:32:38,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:38,393 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:32:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 318533971, now seen corresponding path program 2 times [2021-11-20 06:32:38,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:38,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879359199] [2021-11-20 06:32:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:38,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:32:38,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879359199] [2021-11-20 06:32:38,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879359199] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:32:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102432827] [2021-11-20 06:32:38,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:32:38,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:38,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:32:38,951 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:32:38,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 06:32:39,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:32:39,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:32:39,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:32:39,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:32:39,137 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 18 treesize of output 16 [2021-11-20 06:32:39,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:39,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 06:32:39,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:32:39,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:39,455 INFO L354 Elim1Store]: treesize reduction 157, result has 18.2 percent of original size [2021-11-20 06:32:39,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-20 06:32:39,699 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-11-20 06:32:39,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 64 [2021-11-20 06:32:40,584 INFO L354 Elim1Store]: treesize reduction 53, result has 7.0 percent of original size [2021-11-20 06:32:40,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 48 [2021-11-20 06:32:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 06:32:40,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:32:42,830 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_58| Int)) (let ((.cse1 (* |c_ULTIMATE.start_main_~j~0#1| 4))) (or (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_58| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4 .cse1)) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_58| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| .cse1)))))) is different from false [2021-11-20 06:32:43,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_58| Int)) (or (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_58| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_58| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) is different from false [2021-11-20 06:32:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 5 not checked. [2021-11-20 06:32:49,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102432827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:32:49,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:32:49,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2021-11-20 06:32:49,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145693118] [2021-11-20 06:32:49,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:32:49,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-20 06:32:49,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-20 06:32:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=760, Unknown=4, NotChecked=118, Total=1056 [2021-11-20 06:32:49,789 INFO L87 Difference]: Start difference. First operand 374 states and 491 transitions. Second operand has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:50,526 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~x~0#1_58| Int)) (or (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_58| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_58| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0) (= (select .cse1 |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3))) is different from false [2021-11-20 06:32:51,155 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~x~0#1_58| Int)) (or (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_58| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_58| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select .cse1 |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3))) is different from false [2021-11-20 06:32:51,758 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|))) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) 0) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_58| Int)) (let ((.cse1 (* |c_ULTIMATE.start_main_~j~0#1| 4))) (or (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~x~0#1_58| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4 .cse1)) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1_58| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| .cse1)))))) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| 4)) 3) (= |c_ULTIMATE.start_main_~j~0#1| 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 1))) is different from false [2021-11-20 06:32:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:52,032 INFO L93 Difference]: Finished difference Result 403 states and 523 transitions. [2021-11-20 06:32:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:32:52,040 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-20 06:32:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:52,043 INFO L225 Difference]: With dead ends: 403 [2021-11-20 06:32:52,043 INFO L226 Difference]: Without dead ends: 385 [2021-11-20 06:32:52,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=234, Invalid=1039, Unknown=7, NotChecked=360, Total=1640 [2021-11-20 06:32:52,044 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:52,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 312 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2021-11-20 06:32:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-20 06:32:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 374. [2021-11-20 06:32:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.3163538873994638) internal successors, (491), 373 states have internal predecessors, (491), 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 06:32:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 491 transitions. [2021-11-20 06:32:52,102 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 491 transitions. Word has length 37 [2021-11-20 06:32:52,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:52,103 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 491 transitions. [2021-11-20 06:32:52,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 491 transitions. [2021-11-20 06:32:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:32:52,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:52,105 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:32:52,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:32:52,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:52,333 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:32:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1312147662, now seen corresponding path program 3 times [2021-11-20 06:32:52,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:52,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158207204] [2021-11-20 06:32:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:52,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:32:52,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158207204] [2021-11-20 06:32:52,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158207204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:32:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181849238] [2021-11-20 06:32:52,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:32:52,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:52,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:32:52,416 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:32:52,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 06:32:52,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 06:32:52,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:32:52,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-20 06:32:52,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:32:52,536 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 18 treesize of output 16 [2021-11-20 06:32:52,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:32:52,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:32:52,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:32:52,687 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 30 treesize of output 32 [2021-11-20 06:32:52,851 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-20 06:32:52,852 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 46 treesize of output 51 [2021-11-20 06:33:07,142 INFO L354 Elim1Store]: treesize reduction 192, result has 21.6 percent of original size [2021-11-20 06:33:07,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 84 [2021-11-20 06:33:09,480 INFO L354 Elim1Store]: treesize reduction 172, result has 18.5 percent of original size [2021-11-20 06:33:09,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 67 [2021-11-20 06:33:19,580 INFO L354 Elim1Store]: treesize reduction 59, result has 11.9 percent of original size [2021-11-20 06:33:19,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 53 [2021-11-20 06:33:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 21 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:33:19,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:22,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) is different from false [2021-11-20 06:33:24,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (forall ((|ULTIMATE.start_main_~j~0#1| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))))) is different from false [2021-11-20 06:33:25,173 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) is different from false [2021-11-20 06:34:26,395 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int) (|v_ULTIMATE.start_main_~i~0#1_174| Int) (~INFINITY~0 Int)) (let ((.cse1 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_174| 4)) ~INFINITY~0))) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 0 (select (let ((.cse0 (store .cse1 (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_174| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) is different from false [2021-11-20 06:34:28,715 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_175| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_175| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int) (|v_ULTIMATE.start_main_~i~0#1_174| Int) (~INFINITY~0 Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_175| 4)) ~INFINITY~0) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_174| 4)) ~INFINITY~0))) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_174| (+ |v_ULTIMATE.start_main_~i~0#1_175| 1)) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse1 (store .cse0 (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse1 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))))) is different from false [2021-11-20 06:34:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 2 times theorem prover too weak. 1 trivial. 16 not checked. [2021-11-20 06:34:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181849238] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:34:41,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:34:41,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 21] total 46 [2021-11-20 06:34:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229300975] [2021-11-20 06:34:41,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:34:41,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 06:34:41,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:34:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 06:34:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1344, Unknown=52, NotChecked=410, Total=2070 [2021-11-20 06:34:41,483 INFO L87 Difference]: Start difference. First operand 374 states and 491 transitions. Second operand has 46 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:43,541 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |c_ULTIMATE.start_main_~nodecount~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_175| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_175| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int) (|v_ULTIMATE.start_main_~i~0#1_174| Int) (~INFINITY~0 Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_175| 4)) ~INFINITY~0) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_174| 4)) ~INFINITY~0))) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_174| (+ |v_ULTIMATE.start_main_~i~0#1_175| 1)) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse1 (store .cse0 (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse1 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|))))))) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:34:45,548 WARN L838 $PredicateComparison]: unable to prove that (and (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int) (|v_ULTIMATE.start_main_~i~0#1_174| Int) (~INFINITY~0 Int)) (let ((.cse1 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) ~INFINITY~0) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_174| 4)) ~INFINITY~0))) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 0 (select (let ((.cse0 (store .cse1 (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_174| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse1) |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))))) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:34:50,626 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (and (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select .cse2 |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (= (select .cse2 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) c_~INFINITY~0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1))) is different from false [2021-11-20 06:34:51,570 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (exists ((|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |c_ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) c_~INFINITY~0)))) is different from false [2021-11-20 06:34:52,391 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:34:53,212 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|)) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1)) is different from false [2021-11-20 06:34:54,675 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((|v_ULTIMATE.start_main_~x~0#1_63| Int)) (or (forall ((|ULTIMATE.start_main_~j~0#1| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= 0 (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ |c_ULTIMATE.start_main_~#distance~0#1.offset| (* |v_ULTIMATE.start_main_~x~0#1_63| 4)) (- 1)))) (store .cse0 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse0) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (< |v_ULTIMATE.start_main_~x~0#1_63| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~j~0#1| 0)) is different from false [2021-11-20 06:34:55,832 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Dest~0#1.base|) |c_ULTIMATE.start_main_~#Dest~0#1.offset|))) (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= .cse0 |c_ULTIMATE.start_main_~x~0#1|) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_165| Int)) (and (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|))) (= (select .cse1 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)) (select .cse1 (+ (* |v_ULTIMATE.start_main_~i~0#1_165| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_165| 1) |ULTIMATE.start_main_~i~0#1|) (<= 1 |v_ULTIMATE.start_main_~i~0#1_165|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) |c_ULTIMATE.start_main_~#distance~0#1.offset|) 0) (forall ((|ULTIMATE.start_main_~j~0#1| Int)) (or (<= (+ |ULTIMATE.start_main_~j~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= 0 (select (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base|) (+ (* |c_ULTIMATE.start_main_~x~0#1| 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1)))) (store .cse2 (+ (* (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#distance~0#1.base| .cse2) |c_ULTIMATE.start_main_~#Dest~0#1.base|) (+ |c_ULTIMATE.start_main_~#Dest~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| 4))) 4) |c_ULTIMATE.start_main_~#distance~0#1.offset|) (- 1))) |c_ULTIMATE.start_main_~#distance~0#1.offset|)))) (= |c_ULTIMATE.start_main_~#Dest~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#distance~0#1.offset| 0) (<= 3 |c_ULTIMATE.start_main_~nodecount~0#1|) (= .cse0 1))) is different from false [2021-11-20 06:36:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:36,190 INFO L93 Difference]: Finished difference Result 756 states and 945 transitions. [2021-11-20 06:36:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-20 06:36:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-20 06:36:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:36,194 INFO L225 Difference]: With dead ends: 756 [2021-11-20 06:36:36,194 INFO L226 Difference]: Without dead ends: 734 [2021-11-20 06:36:36,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 219.6s TimeCoverageRelationStatistics Valid=1470, Invalid=9186, Unknown=108, NotChecked=2808, Total=13572 [2021-11-20 06:36:36,200 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 344 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:36,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 789 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 575 Invalid, 0 Unknown, 1188 Unchecked, 0.5s Time] [2021-11-20 06:36:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-20 06:36:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 412. [2021-11-20 06:36:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.3187347931873479) internal successors, (542), 411 states have internal predecessors, (542), 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 06:36:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 542 transitions. [2021-11-20 06:36:36,252 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 542 transitions. Word has length 37 [2021-11-20 06:36:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:36,252 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 542 transitions. [2021-11-20 06:36:36,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 542 transitions. [2021-11-20 06:36:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 06:36:36,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:36,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:36,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:36,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:36:36,454 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:36:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1630806470, now seen corresponding path program 1 times [2021-11-20 06:36:36,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:36:36,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764095573] [2021-11-20 06:36:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:36,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:36:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:36:38,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:36:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764095573] [2021-11-20 06:36:38,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764095573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:36:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004326208] [2021-11-20 06:36:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:38,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:36:38,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:36:38,163 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:36:38,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 06:36:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:38,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-20 06:36:38,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:36:38,249 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:36:38,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 06:36:38,364 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 06:36:38,365 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 37 treesize of output 42 [2021-11-20 06:36:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:36:38,559 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 06:36:38,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 50 [2021-11-20 06:36:38,856 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 06:36:38,856 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 55 [2021-11-20 06:36:39,215 INFO L354 Elim1Store]: treesize reduction 283, result has 0.4 percent of original size [2021-11-20 06:36:39,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 106 treesize of output 1 [2021-11-20 06:36:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:36:39,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:36:42,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004326208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:36:42,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:36:42,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 32 [2021-11-20 06:36:42,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946895899] [2021-11-20 06:36:42,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:36:42,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 06:36:42,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:36:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 06:36:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=806, Unknown=1, NotChecked=0, Total=992 [2021-11-20 06:36:42,542 INFO L87 Difference]: Start difference. First operand 412 states and 542 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:46,267 INFO L93 Difference]: Finished difference Result 990 states and 1249 transitions. [2021-11-20 06:36:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 06:36:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-20 06:36:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:46,272 INFO L225 Difference]: With dead ends: 990 [2021-11-20 06:36:46,273 INFO L226 Difference]: Without dead ends: 923 [2021-11-20 06:36:46,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=617, Invalid=2804, Unknown=1, NotChecked=0, Total=3422 [2021-11-20 06:36:46,275 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 313 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:46,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 685 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 443 Invalid, 0 Unknown, 291 Unchecked, 0.9s Time] [2021-11-20 06:36:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-20 06:36:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 549. [2021-11-20 06:36:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.3412408759124088) internal successors, (735), 548 states have internal predecessors, (735), 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 06:36:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 735 transitions. [2021-11-20 06:36:46,384 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 735 transitions. Word has length 38 [2021-11-20 06:36:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:46,384 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 735 transitions. [2021-11-20 06:36:46,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 735 transitions. [2021-11-20 06:36:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 06:36:46,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:46,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:46,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:46,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 06:36:46,600 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:36:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 670016120, now seen corresponding path program 1 times [2021-11-20 06:36:46,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:36:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320344632] [2021-11-20 06:36:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:46,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:36:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:36:46,644 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:36:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:36:46,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:36:46,715 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:36:46,718 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:36:46,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:36:46,723 INFO L732 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:46,726 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:36:46,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:36:46 BoogieIcfgContainer [2021-11-20 06:36:46,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:36:46,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:36:46,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:36:46,789 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:36:46,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:06" (3/4) ... [2021-11-20 06:36:46,792 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 06:36:46,881 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:36:46,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:36:46,885 INFO L158 Benchmark]: Toolchain (without parser) took 341645.40ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 50.3MB in the beginning and 58.5MB in the end (delta: -8.2MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,887 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:36:46,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.04ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 50.2MB in the beginning and 93.6MB in the end (delta: -43.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.86ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,888 INFO L158 Benchmark]: Boogie Preprocessor took 72.45ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,889 INFO L158 Benchmark]: RCFGBuilder took 512.27ms. Allocated memory is still 119.5MB. Free memory was 89.8MB in the beginning and 75.5MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,889 INFO L158 Benchmark]: TraceAbstraction took 340519.82ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 75.0MB in the beginning and 63.7MB in the end (delta: 11.3MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,892 INFO L158 Benchmark]: Witness Printer took 95.62ms. Allocated memory is still 144.7MB. Free memory was 62.7MB in the beginning and 58.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:36:46,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.04ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 50.2MB in the beginning and 93.6MB in the end (delta: -43.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.86ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.45ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.27ms. Allocated memory is still 119.5MB. Free memory was 89.8MB in the beginning and 75.5MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 340519.82ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 75.0MB in the beginning and 63.7MB in the end (delta: 11.3MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Witness Printer took 95.62ms. Allocated memory is still 144.7MB. Free memory was 62.7MB in the beginning and 58.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int INFINITY = 899; VAL [INFINITY=899] [L18] int nodecount = __VERIFIER_nondet_int(); [L19] int edgecount = __VERIFIER_nondet_int(); [L20] COND FALSE !(!(0 <= nodecount && nodecount <= 4)) VAL [edgecount=1, INFINITY=899, nodecount=2] [L21] COND FALSE !(!(0 <= edgecount && edgecount <= 19)) [L22] int source = 0; [L23] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L24] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L25] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L26] int distance[5]; [L27] int x,y; [L28] int i,j; [L30] i = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L30] COND TRUE i < nodecount VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, nodecount=2, Source={21:0}, source=0, Weight={25:0}] [L31] COND TRUE i == source [L32] distance[i] = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L30] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L30] COND TRUE i < nodecount VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L31] COND FALSE !(i == source) [L35] distance[i] = INFINITY VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L30] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=2, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L30] COND FALSE !(i < nodecount) VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=2, INFINITY=899, nodecount=2, Source={21:0}, source=0, Weight={25:0}] [L39] i = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L39] COND TRUE i < nodecount [L41] j = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=0, nodecount=2, source=0, Source={21:0}, Weight={25:0}] [L41] COND TRUE j < edgecount [L43] EXPR Dest[j] [L43] x = Dest[j] [L44] EXPR Source[j] [L44] y = Source[j] [L45] EXPR distance[x] [L45] EXPR distance[y] [L45] EXPR Weight[j] VAL [Dest={23:0}, distance={22:0}, distance[x]=899, distance[y]=0, edgecount=1, i=0, INFINITY=899, j=0, nodecount=2, Source={21:0}, source=0, Weight={25:0}, Weight[j]=0, x=1, y=0] [L45] COND TRUE distance[x] > distance[y] + Weight[j] [L47] distance[x] = -1 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=0, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L41] j++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L41] COND FALSE !(j < edgecount) VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L39] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L39] COND TRUE i < nodecount [L41] j = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=0, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L41] COND TRUE j < edgecount [L43] EXPR Dest[j] [L43] x = Dest[j] [L44] EXPR Source[j] [L44] y = Source[j] [L45] EXPR distance[x] [L45] EXPR distance[y] [L45] EXPR Weight[j] VAL [Dest={23:0}, distance={22:0}, distance[x]=-1, distance[y]=0, edgecount=1, i=1, INFINITY=899, j=0, nodecount=2, Source={21:0}, source=0, Weight={25:0}, Weight[j]=0, x=1, y=0] [L45] COND FALSE !(distance[x] > distance[y] + Weight[j]) [L41] j++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L41] COND FALSE !(j < edgecount) VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L39] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=2, INFINITY=899, j=1, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L39] COND FALSE !(i < nodecount) VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=2, INFINITY=899, j=1, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L51] i = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L51] COND TRUE i < edgecount [L53] EXPR Dest[i] [L53] x = Dest[i] [L54] EXPR Source[i] [L54] y = Source[i] [L55] EXPR distance[x] [L55] EXPR distance[y] [L55] EXPR Weight[i] VAL [Dest={23:0}, distance={22:0}, distance[x]=-1, distance[y]=0, edgecount=1, i=0, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, Weight[i]=0, x=1, y=0] [L55] COND FALSE !(distance[x] > distance[y] + Weight[i]) [L51] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, source=0, Source={21:0}, Weight={25:0}, x=1, y=0] [L51] COND FALSE !(i < edgecount) VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L61] i = 0 VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=0, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L61] COND TRUE i < nodecount [L63] EXPR distance[i] [L63] CALL __VERIFIER_assert(distance[i]>=0) [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, INFINITY=899] [L63] RET __VERIFIER_assert(distance[i]>=0) [L61] i++ VAL [Dest={23:0}, distance={22:0}, edgecount=1, i=1, INFINITY=899, j=1, nodecount=2, Source={21:0}, source=0, Weight={25:0}, x=1, y=0] [L61] COND TRUE i < nodecount [L63] EXPR distance[i] [L63] CALL __VERIFIER_assert(distance[i]>=0) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, INFINITY=899] [L12] reach_error() VAL [\old(cond)=0, cond=0, INFINITY=899] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 340.3s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 146.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2768 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2768 mSDsluCounter, 5584 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3210 IncrementalHoareTripleChecker+Unchecked, 4855 mSDsCounter, 995 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4210 IncrementalHoareTripleChecker+Invalid, 8415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 995 mSolverCounterUnsat, 729 mSDtfsCounter, 4210 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1594 GetRequests, 889 SyntacticMatches, 41 SemanticMatches, 664 ConstructedPredicates, 43 IntricatePredicates, 0 DeprecatedPredicates, 9013 ImplicationChecksByTransitivity, 303.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=549occurred in iteration=22, InterpolantAutomatonStates: 427, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 1595 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 185.5s InterpolantComputationTime, 1237 NumberOfCodeBlocks, 1231 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1679 ConstructedInterpolants, 211 QuantifiedInterpolants, 34737 SizeOfPredicates, 228 NumberOfNonLiveVariables, 4706 ConjunctsInSsa, 402 ConjunctsInUnsatCore, 59 InterpolantComputations, 4 PerfectInterpolantSequences, 282/768 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 06:36:47,117 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-20 06:36:47,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42cc8fd6-a514-4d09-86b1-928e7c4cf730/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE