./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina4.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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/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 933eff495d93b07d12af9180ab5b75cc35fb173187f8af9883307194e1e7fea3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:56:08,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:56:08,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:56:08,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:56:08,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:56:08,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:56:08,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:56:08,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:56:08,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:56:08,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:56:08,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:56:08,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:56:08,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:56:08,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:56:08,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:56:08,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:56:08,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:56:08,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:56:08,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:56:08,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:56:08,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:56:08,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:56:08,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:56:08,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:56:08,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:56:08,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:56:08,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:56:08,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:56:08,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:56:08,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:56:08,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:56:08,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:56:08,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:56:08,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:56:08,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:56:08,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:56:08,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:56:08,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:56:08,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:56:08,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:56:08,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:56:08,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:56:09,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:56:09,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:56:09,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:56:09,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:56:09,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:56:09,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:56:09,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:56:09,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:56:09,021 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:56:09,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:56:09,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:56:09,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:56:09,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:56:09,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:56:09,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:56:09,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:56:09,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:56:09,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:56:09,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:56:09,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:56:09,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:56:09,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:56:09,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:56:09,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:56:09,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:09,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:56:09,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:56:09,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:56:09,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:56:09,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:56:09,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:56:09,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:56:09,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:56:09,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:56:09,028 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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 933eff495d93b07d12af9180ab5b75cc35fb173187f8af9883307194e1e7fea3 [2021-11-20 05:56:09,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:56:09,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:56:09,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:56:09,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:56:09,319 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:56:09,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-fpi/sina4.c [2021-11-20 05:56:09,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/data/30ac2bf60/04774b2ec37749548c690773dc4e8698/FLAG2d5aa3b3b [2021-11-20 05:56:09,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:56:09,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/sv-benchmarks/c/array-fpi/sina4.c [2021-11-20 05:56:09,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/data/30ac2bf60/04774b2ec37749548c690773dc4e8698/FLAG2d5aa3b3b [2021-11-20 05:56:10,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/data/30ac2bf60/04774b2ec37749548c690773dc4e8698 [2021-11-20 05:56:10,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:56:10,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:56:10,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:10,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:56:10,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:56:10,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78826f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10, skipping insertion in model container [2021-11-20 05:56:10,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:56:10,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:56:10,555 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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/sv-benchmarks/c/array-fpi/sina4.c[588,601] [2021-11-20 05:56:10,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:10,589 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:56:10,606 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_2ba27423-6878-4ab2-9a64-b1f53e41f09a/sv-benchmarks/c/array-fpi/sina4.c[588,601] [2021-11-20 05:56:10,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:10,639 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:56:10,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10 WrapperNode [2021-11-20 05:56:10,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:10,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:10,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:56:10,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:56:10,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,717 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-11-20 05:56:10,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:10,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:56:10,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:56:10,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:56:10,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:56:10,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:56:10,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:56:10,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:56:10,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (1/1) ... [2021-11-20 05:56:10,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:10,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:10,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:56:10,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:56:10,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:56:10,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:56:10,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:56:10,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:56:10,930 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:56:10,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:56:11,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:56:11,135 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:56:11,144 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 05:56:11,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:11 BoogieIcfgContainer [2021-11-20 05:56:11,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:56:11,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:56:11,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:56:11,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:56:11,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:56:10" (1/3) ... [2021-11-20 05:56:11,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b238b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:11, skipping insertion in model container [2021-11-20 05:56:11,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:10" (2/3) ... [2021-11-20 05:56:11,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b238b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:11, skipping insertion in model container [2021-11-20 05:56:11,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:11" (3/3) ... [2021-11-20 05:56:11,157 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4.c [2021-11-20 05:56:11,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:56:11,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:56:11,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:56:11,247 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:56:11,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:56:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:56:11,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:11,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:11,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2021-11-20 05:56:11,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473919426] [2021-11-20 05:56:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:11,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:11,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473919426] [2021-11-20 05:56:11,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473919426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:11,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:11,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:56:11,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149964670] [2021-11-20 05:56:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:11,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:56:11,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:56:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:56:11,480 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:11,498 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2021-11-20 05:56:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:56:11,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 05:56:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:11,509 INFO L225 Difference]: With dead ends: 50 [2021-11-20 05:56:11,509 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 05:56:11,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:56:11,517 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:11,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 05:56:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 05:56:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-20 05:56:11,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-11-20 05:56:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:11,561 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-20 05:56:11,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-20 05:56:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:56:11,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:11,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:11,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:56:11,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2021-11-20 05:56:11,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:11,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784466114] [2021-11-20 05:56:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:11,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:11,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784466114] [2021-11-20 05:56:11,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784466114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:11,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:11,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:56:11,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908568033] [2021-11-20 05:56:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:11,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:11,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:11,694 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:11,775 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-11-20 05:56:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 05:56:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:11,777 INFO L225 Difference]: With dead ends: 53 [2021-11-20 05:56:11,778 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 05:56:11,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:11,781 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 05:56:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-11-20 05:56:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-20 05:56:11,793 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2021-11-20 05:56:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:11,794 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-20 05:56:11,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-20 05:56:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 05:56:11,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:11,797 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] [2021-11-20 05:56:11,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:56:11,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2021-11-20 05:56:11,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462753145] [2021-11-20 05:56:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:11,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:12,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462753145] [2021-11-20 05:56:12,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462753145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476126161] [2021-11-20 05:56:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:12,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:12,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:12,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:12,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:56:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:13,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 05:56:13,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:13,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 05:56:13,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:56:13,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:13,217 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 05:56:13,442 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:56:13,724 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-20 05:56:13,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-20 05:56:14,138 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-20 05:56:14,139 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 42 treesize of output 48 [2021-11-20 05:56:15,195 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-11-20 05:56:15,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2021-11-20 05:56:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:15,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:26,858 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 54 treesize of output 52 [2021-11-20 05:56:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:26,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476126161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:26,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:26,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2021-11-20 05:56:26,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107892178] [2021-11-20 05:56:26,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:26,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:56:26,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:56:26,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=975, Unknown=2, NotChecked=0, Total=1122 [2021-11-20 05:56:26,892 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:27,417 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-11-20 05:56:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:56:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 05:56:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:27,420 INFO L225 Difference]: With dead ends: 53 [2021-11-20 05:56:27,420 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 05:56:27,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=169, Invalid=1089, Unknown=2, NotChecked=0, Total=1260 [2021-11-20 05:56:27,423 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:27,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 132 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 44 Unchecked, 0.4s Time] [2021-11-20 05:56:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 05:56:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-11-20 05:56:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-11-20 05:56:27,435 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 24 [2021-11-20 05:56:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:27,436 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-11-20 05:56:27,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-11-20 05:56:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:56:27,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:27,439 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, 1, 1, 1, 1] [2021-11-20 05:56:27,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:27,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:27,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:27,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 831040416, now seen corresponding path program 2 times [2021-11-20 05:56:27,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:27,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258685927] [2021-11-20 05:56:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:27,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:27,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:27,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258685927] [2021-11-20 05:56:27,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258685927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080063552] [2021-11-20 05:56:27,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:56:27,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:27,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:27,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:27,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:56:27,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:56:27,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:56:27,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:28,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:28,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080063552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:28,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:28,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 05:56:28,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143108310] [2021-11-20 05:56:28,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:28,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:56:28,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:56:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:56:28,124 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:28,353 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2021-11-20 05:56:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:28,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 05:56:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:28,359 INFO L225 Difference]: With dead ends: 101 [2021-11-20 05:56:28,359 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 05:56:28,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 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 05:56:28,363 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:28,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 46 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:56:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 05:56:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2021-11-20 05:56:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-20 05:56:28,390 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 26 [2021-11-20 05:56:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:28,391 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-20 05:56:28,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-20 05:56:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:56:28,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:28,398 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, 1, 1, 1, 1] [2021-11-20 05:56:28,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:28,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:28,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash -587916192, now seen corresponding path program 3 times [2021-11-20 05:56:28,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:28,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51159054] [2021-11-20 05:56:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:28,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:28,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51159054] [2021-11-20 05:56:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51159054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894669673] [2021-11-20 05:56:28,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:56:28,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:28,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:28,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:56:28,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 05:56:28,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:56:28,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:28,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:28,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:28,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894669673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:28,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:28,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 05:56:28,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293273895] [2021-11-20 05:56:28,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:28,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:56:28,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:56:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:56:28,980 INFO L87 Difference]: Start difference. First operand 46 states and 53 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 05:56:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:29,196 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-11-20 05:56:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:29,197 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 26 [2021-11-20 05:56:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:29,198 INFO L225 Difference]: With dead ends: 63 [2021-11-20 05:56:29,198 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 05:56:29,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 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 05:56:29,199 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 88 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:29,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 47 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:56:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 05:56:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2021-11-20 05:56:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-20 05:56:29,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2021-11-20 05:56:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:29,205 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-20 05:56:29,205 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 05:56:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-20 05:56:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:56:29,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:29,207 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] [2021-11-20 05:56:29,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:29,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:29,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 4 times [2021-11-20 05:56:29,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:29,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219485901] [2021-11-20 05:56:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:29,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:31,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219485901] [2021-11-20 05:56:31,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219485901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535045247] [2021-11-20 05:56:31,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:56:31,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:31,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:31,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:56:31,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:56:31,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:56:31,444 WARN L261 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 05:56:31,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:31,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:56:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:31,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:56:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:31,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:31,696 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 30 treesize of output 32 [2021-11-20 05:56:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:32,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,094 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-20 05:56:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2021-11-20 05:56:32,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:32,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,603 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2021-11-20 05:56:32,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:32,833 INFO L354 Elim1Store]: treesize reduction 57, result has 10.9 percent of original size [2021-11-20 05:56:32,834 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 4 case distinctions, treesize of input 60 treesize of output 42 [2021-11-20 05:56:33,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:33,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:33,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:33,226 INFO L354 Elim1Store]: treesize reduction 111, result has 23.4 percent of original size [2021-11-20 05:56:33,226 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 9 case distinctions, treesize of input 66 treesize of output 74 [2021-11-20 05:56:33,723 INFO L354 Elim1Store]: treesize reduction 226, result has 24.2 percent of original size [2021-11-20 05:56:33,724 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 5 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 115 [2021-11-20 05:56:38,386 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 45 treesize of output 33 [2021-11-20 05:56:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:38,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:39,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_69| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_69| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse0) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) is different from false [2021-11-20 05:56:41,315 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_69| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_69| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) is different from false [2021-11-20 05:56:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-20 05:56:48,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535045247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:48,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:48,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 22] total 65 [2021-11-20 05:56:48,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382754857] [2021-11-20 05:56:48,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:48,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-20 05:56:48,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-20 05:56:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=3593, Unknown=2, NotChecked=246, Total=4160 [2021-11-20 05:56:48,801 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 65 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 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 05:56:54,784 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (or (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse0 (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (or (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|) (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= 2 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))))) (= .cse0 4) (= 3 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (< 1 c_~N~0) (<= c_~N~0 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_69| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_69| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))))) is different from false [2021-11-20 05:56:55,675 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (.cse0 (+ 2 c_~N~0))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_69| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_69| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))))) is different from false [2021-11-20 05:56:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:55,861 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-11-20 05:56:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 05:56:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 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 32 [2021-11-20 05:56:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:55,866 INFO L225 Difference]: With dead ends: 91 [2021-11-20 05:56:55,866 INFO L226 Difference]: Without dead ends: 89 [2021-11-20 05:56:55,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=409, Invalid=4715, Unknown=4, NotChecked=572, Total=5700 [2021-11-20 05:56:55,870 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:55,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 201 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 342 Invalid, 0 Unknown, 604 Unchecked, 0.3s Time] [2021-11-20 05:56:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-20 05:56:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2021-11-20 05:56:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2021-11-20 05:56:55,883 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 32 [2021-11-20 05:56:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:55,884 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2021-11-20 05:56:55,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 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 05:56:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2021-11-20 05:56:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:56:55,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:55,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:55,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-20 05:56:56,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:56,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2147373800, now seen corresponding path program 5 times [2021-11-20 05:56:56,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:56,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079716671] [2021-11-20 05:56:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:56,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:56:56,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079716671] [2021-11-20 05:56:56,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079716671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007745862] [2021-11-20 05:56:56,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:56:56,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:56,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:56,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:56,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:56:56,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-20 05:56:56,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:56:56,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:56:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:56:56,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:56:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007745862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:56,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-20 05:56:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474376716] [2021-11-20 05:56:56,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:56,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:56:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:56:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:56:56,558 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:56,784 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2021-11-20 05:56:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:56:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 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 05:56:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:56,786 INFO L225 Difference]: With dead ends: 145 [2021-11-20 05:56:56,786 INFO L226 Difference]: Without dead ends: 110 [2021-11-20 05:56:56,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:56:56,787 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 124 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:56,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 66 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:56:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-20 05:56:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 77. [2021-11-20 05:56:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.131578947368421) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-11-20 05:56:56,802 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 34 [2021-11-20 05:56:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:56,802 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-11-20 05:56:56,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:56:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-11-20 05:56:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:56:56,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:56,804 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] [2021-11-20 05:56:56,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:57,013 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1737020496, now seen corresponding path program 1 times [2021-11-20 05:56:57,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:57,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206561680] [2021-11-20 05:56:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:57,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:58,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:58,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206561680] [2021-11-20 05:56:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206561680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:58,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146129068] [2021-11-20 05:56:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:58,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:58,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:56:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:58,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 05:56:58,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:58,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-20 05:56:58,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:56:58,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:58,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:56:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:58,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-20 05:56:59,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:59,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-20 05:56:59,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2021-11-20 05:56:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2021-11-20 05:56:59,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:59,959 INFO L354 Elim1Store]: treesize reduction 57, result has 10.9 percent of original size [2021-11-20 05:56:59,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 44 [2021-11-20 05:57:00,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:00,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:00,241 INFO L354 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2021-11-20 05:57:00,241 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 59 [2021-11-20 05:57:00,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:00,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:00,547 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 05:57:00,549 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 8 case distinctions, treesize of input 63 treesize of output 63 [2021-11-20 05:57:01,484 INFO L354 Elim1Store]: treesize reduction 61, result has 6.2 percent of original size [2021-11-20 05:57:01,484 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 62 [2021-11-20 05:57:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:01,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:06,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146129068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:06,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:57:06,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 66 [2021-11-20 05:57:06,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923788071] [2021-11-20 05:57:06,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:06,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 05:57:06,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 05:57:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3921, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 05:57:06,158 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 66 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:15,392 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2021-11-20 05:57:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 05:57:15,392 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 05:57:15,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:15,393 INFO L225 Difference]: With dead ends: 108 [2021-11-20 05:57:15,393 INFO L226 Difference]: Without dead ends: 63 [2021-11-20 05:57:15,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=543, Invalid=5463, Unknown=0, NotChecked=0, Total=6006 [2021-11-20 05:57:15,396 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:15,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 188 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 794 Invalid, 0 Unknown, 79 Unchecked, 2.9s Time] [2021-11-20 05:57:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-20 05:57:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-11-20 05:57:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-11-20 05:57:15,405 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 36 [2021-11-20 05:57:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:15,405 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-11-20 05:57:15,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-11-20 05:57:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:57:15,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:15,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:15,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:15,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 05:57:15,621 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1245131882, now seen corresponding path program 6 times [2021-11-20 05:57:15,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:15,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315624056] [2021-11-20 05:57:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:15,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:57:15,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:15,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315624056] [2021-11-20 05:57:15,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315624056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:57:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172743894] [2021-11-20 05:57:15,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 05:57:15,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:15,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:15,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:15,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:57:15,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-20 05:57:15,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:57:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:57:15,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:57:15,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:57:16,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172743894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:16,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:57:16,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-20 05:57:16,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600453812] [2021-11-20 05:57:16,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:16,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:57:16,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:57:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:57:16,039 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:16,231 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2021-11-20 05:57:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:57:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 05:57:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:16,232 INFO L225 Difference]: With dead ends: 80 [2021-11-20 05:57:16,232 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 05:57:16,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:57:16,233 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 126 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:16,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 75 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:57:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 05:57:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-11-20 05:57:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-20 05:57:16,239 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 36 [2021-11-20 05:57:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:16,240 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-20 05:57:16,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:57:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-20 05:57:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:57:16,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:16,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:16,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:16,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:16,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1201221586, now seen corresponding path program 7 times [2021-11-20 05:57:16,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:16,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532398845] [2021-11-20 05:57:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:16,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:18,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532398845] [2021-11-20 05:57:18,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532398845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:57:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635528520] [2021-11-20 05:57:18,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 05:57:18,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:18,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:18,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:57:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:19,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-20 05:57:19,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:19,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:57:19,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,132 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 05:57:19,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 05:57:19,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-20 05:57:19,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:19,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 05:57:20,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:20,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-11-20 05:57:20,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2021-11-20 05:57:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:20,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 56 [2021-11-20 05:57:21,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:21,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 58 [2021-11-20 05:57:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:21,443 INFO L354 Elim1Store]: treesize reduction 204, result has 19.4 percent of original size [2021-11-20 05:57:21,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 88 treesize of output 88 [2021-11-20 05:57:22,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:22,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,152 INFO L354 Elim1Store]: treesize reduction 121, result has 23.9 percent of original size [2021-11-20 05:57:22,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 105 treesize of output 98 [2021-11-20 05:57:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:22,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:22,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:22,571 INFO L354 Elim1Store]: treesize reduction 157, result has 18.7 percent of original size [2021-11-20 05:57:22,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 109 treesize of output 116 [2021-11-20 05:57:23,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:23,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:23,154 INFO L354 Elim1Store]: treesize reduction 352, result has 20.0 percent of original size [2021-11-20 05:57:23,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 143 [2021-11-20 05:57:35,629 INFO L354 Elim1Store]: treesize reduction 6, result has 76.0 percent of original size [2021-11-20 05:57:35,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 57 [2021-11-20 05:57:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:35,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:36,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse0) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) is different from false [2021-11-20 05:58:23,667 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (= (select (let ((.cse0 (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2 8) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_148| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2021-11-20 05:58:25,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (select (let ((.cse0 (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse2 (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1)))) (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3 8) (+ (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 8)) 1))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) is different from false [2021-11-20 05:58:28,347 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (+ 2 c_~N~0) (select (let ((.cse4 (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8)))) (store .cse5 .cse6 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse5 .cse6)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 05:59:32,164 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (select (let ((.cse4 (let ((.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8))) (.cse5 (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) 8))) (store .cse7 .cse8 (+ (select .cse7 .cse8) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse5 .cse6 (+ (select .cse5 .cse6) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2021-11-20 05:59:34,422 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (select (let ((.cse4 (let ((.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8))) (.cse5 (let ((.cse9 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse7 (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse9))) (store .cse10 .cse11 (+ (select .cse10 .cse11) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse9 8))) (store .cse7 .cse8 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse7 .cse8))))))) (store .cse5 .cse6 (+ (select .cse5 .cse6) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) is different from false [2021-11-20 06:01:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2021-11-20 06:01:26,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635528520] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:01:26,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:01:26,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 86 [2021-11-20 06:01:26,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089150451] [2021-11-20 06:01:26,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:01:26,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-20 06:01:26,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:01:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-20 06:01:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=5825, Unknown=75, NotChecked=966, Total=7310 [2021-11-20 06:01:26,700 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 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 06:01:47,992 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (+ 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) .cse1) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) (+ .cse1 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (+ 2 c_~N~0) (select (let ((.cse6 (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8)))) (store .cse7 .cse8 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse7 .cse8)))))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6))) (let ((.cse2 (let ((.cse5 (store (select .cse4 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse5 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse4 |ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse3 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select (store .cse4 |ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (select (let ((.cse13 (let ((.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8))) (.cse14 (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) 8))) (store .cse16 .cse17 (+ (select .cse16 .cse17) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse14 .cse15 (+ (select .cse14 .cse15) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse9 (let ((.cse12 (store (select .cse11 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse11 |ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse10 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse10) (+ (select (select (store .cse11 |ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse10)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (<= c_~N~0 3) (= 3 .cse1) (< 2 c_~N~0))) is different from false [2021-11-20 06:01:50,525 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8)) (.cse0 (+ .cse3 1))) (and (= .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 8)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (+ 2 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) .cse3) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) .cse0) (= |c_ULTIMATE.start_main_~i~0#1| 1) (forall ((|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (+ 2 c_~N~0) (select (let ((.cse8 (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8)))) (store .cse9 .cse10 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse9 .cse10)))))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8))) (let ((.cse4 (let ((.cse7 (store (select .cse6 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse6 |ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse5 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5) (+ (select (select (store .cse6 |ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (<= c_~N~0 3) (= 3 .cse3) (< 2 c_~N~0)))) is different from false [2021-11-20 06:01:52,566 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse14 (select .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (let ((.cse1 (select (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (store .cse2 .cse3 (+ (select .cse2 .cse3) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) 0)) (.cse0 (+ c_~N~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_152| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| 2) (= (+ 2 c_~N~0) (select (let ((.cse8 (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_152| 8)))) (store .cse9 .cse10 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse9 .cse10)))))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8))) (let ((.cse4 (let ((.cse7 (store (select .cse6 |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) (+ (select (select (store .cse6 |ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse5 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5) (+ (select (select (store .cse6 |ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5)) 1))))) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (< |v_ULTIMATE.start_main_~i~0#1_152| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse13 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (.cse11 (= (* 8 |ULTIMATE.start_main_~i~0#1|) 16))) (and (or .cse11 (= (+ 3 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) .cse13)) (or (= (+ (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) 4) (* 2 .cse13)) (not .cse11)) (<= 2 |ULTIMATE.start_main_~i~0#1|))))) (= .cse14 4) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (= (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse14) (<= c_~N~0 3) (< 2 c_~N~0) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= (+ (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))))) is different from false [2021-11-20 06:01:58,133 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2)))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (or (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse0 (+ (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1))) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 4) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse3 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (= (select (let ((.cse4 (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse6 8) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6 8)) 1)))) (.cse5 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_148| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (let ((.cse7 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (or (= .cse7 1) (= .cse7 4))) (<= c_~N~0 3) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int)) (and (or (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|) (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= 3 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|))) (< 2 c_~N~0) (= 5 .cse0)))) is different from false [2021-11-20 06:01:58,989 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (and (= 5 (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1 (- 8)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse2 (= (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 4)) (or .cse2 (= 4 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8))))) (= |c_ULTIMATE.start_main_~i~0#1| 1) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse4 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse4) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (let ((.cse5 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (or (= .cse5 1) (= .cse5 4))) (<= c_~N~0 3) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int)) (and (or (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|) (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= 3 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|))) (< 2 c_~N~0) (= 5 (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1))))) is different from false [2021-11-20 06:02:00,335 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (.cse0 (+ 2 c_~N~0))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (= (select (let ((.cse3 (let ((.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5 8) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5 8)) 1)))) (.cse4 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse4) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_148| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0))) is different from false [2021-11-20 06:02:01,502 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse2 (+ 2 c_~N~0)) (.cse1 (select (let ((.cse12 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse12) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12)) 1))) 0))) (and (<= (+ (div (* |c_ULTIMATE.start_main_~b~0#1.offset| (- 1)) 8) 1) |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= 5 (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (= 5 (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|)) (<= .cse1 .cse2) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse3 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (<= c_~N~0 3) (<= .cse2 .cse1) (< 2 c_~N~0) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse11 (* |ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse9 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse11))) (.cse5 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (= |c_ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|))) (and (or (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|) (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= 3 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (or .cse4 (= (select .cse5 0) 4)) (< (+ |ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (let ((.cse10 (* 8 |ULTIMATE.start_main_~i~0#1|))) (let ((.cse6 (= (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|) 16)) (.cse7 (select .cse5 16)) (.cse8 (not (= .cse10 16)))) (or (and (or .cse6 (= .cse7 4)) (or .cse8 (= 5 .cse9))) (and (or .cse6 (= .cse7 1)) (or (= .cse9 2) .cse8))))) (or .cse4 (= (+ 1 (select .cse5 .cse11)) .cse9)) (<= 2 |ULTIMATE.start_main_~i~0#1|) (or (= (select .cse5 8) 4) .cse4)))))))) is different from false [2021-11-20 06:02:02,376 WARN L838 $PredicateComparison]: unable to prove that (and (= (+ 2 c_~N~0) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse0) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0))))) is different from false [2021-11-20 06:02:03,336 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 c_~N~0)) (.cse0 (select (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1))) 0))) (and (<= (+ (div (* |c_ULTIMATE.start_main_~b~0#1.offset| (- 1)) 8) 1) |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= .cse0 .cse1) (forall ((|v_ULTIMATE.start_main_~i~0#1_148| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_148| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_148| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1))) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 c_~N~0)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (<= .cse1 .cse0))) is different from false [2021-11-20 06:02:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:19,062 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2021-11-20 06:02:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-20 06:02:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 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 40 [2021-11-20 06:02:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:19,063 INFO L225 Difference]: With dead ends: 121 [2021-11-20 06:02:19,064 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 06:02:19,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 129 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 4266 ImplicationChecksByTransitivity, 264.1s TimeCoverageRelationStatistics Valid=875, Invalid=12435, Unknown=90, NotChecked=3630, Total=17030 [2021-11-20 06:02:19,069 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 879 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:19,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 225 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 604 Invalid, 0 Unknown, 879 Unchecked, 0.7s Time] [2021-11-20 06:02:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 06:02:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2021-11-20 06:02:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 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 06:02:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2021-11-20 06:02:19,086 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 40 [2021-11-20 06:02:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:19,086 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2021-11-20 06:02:19,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 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 06:02:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2021-11-20 06:02:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:02:19,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:19,089 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:19,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:19,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 06:02:19,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1012369648, now seen corresponding path program 8 times [2021-11-20 06:02:19,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:19,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62613170] [2021-11-20 06:02:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:19,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:02:19,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62613170] [2021-11-20 06:02:19,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62613170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264284684] [2021-11-20 06:02:19,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:02:19,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:19,418 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:19,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:02:19,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:02:19,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:02:19,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:02:19,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:02:19,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:02:19,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264284684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:02:19,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:02:19,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-11-20 06:02:19,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862507754] [2021-11-20 06:02:19,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:19,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 06:02:19,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 06:02:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:02:19,733 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:02:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:19,981 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2021-11-20 06:02:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:02:19,982 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-20 06:02:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:19,983 INFO L225 Difference]: With dead ends: 207 [2021-11-20 06:02:19,983 INFO L226 Difference]: Without dead ends: 166 [2021-11-20 06:02:19,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:02:19,985 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 146 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:19,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 100 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:02:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-20 06:02:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 115. [2021-11-20 06:02:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:02:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2021-11-20 06:02:20,004 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 42 [2021-11-20 06:02:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:20,004 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2021-11-20 06:02:20,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:02:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2021-11-20 06:02:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 06:02:20,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:20,007 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:20,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:20,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 06:02:20,233 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2112995272, now seen corresponding path program 2 times [2021-11-20 06:02:20,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:20,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483006389] [2021-11-20 06:02:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:20,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:23,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:23,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483006389] [2021-11-20 06:02:23,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483006389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:23,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973498848] [2021-11-20 06:02:23,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:02:23,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:23,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:02:23,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:02:23,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:02:23,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-20 06:02:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:23,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-20 06:02:23,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:02:23,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 06:02:23,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:23,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:23,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-20 06:02:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-20 06:02:24,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:02:24,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:24,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:24,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 54 [2021-11-20 06:02:25,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 49 [2021-11-20 06:02:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:25,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 56 [2021-11-20 06:02:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:25,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 53 [2021-11-20 06:02:25,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:25,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:26,034 INFO L354 Elim1Store]: treesize reduction 204, result has 19.4 percent of original size [2021-11-20 06:02:26,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 96 treesize of output 94 [2021-11-20 06:02:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:26,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:26,666 INFO L354 Elim1Store]: treesize reduction 79, result has 8.1 percent of original size [2021-11-20 06:02:26,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 83 [2021-11-20 06:02:27,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:27,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:27,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:27,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:27,121 INFO L354 Elim1Store]: treesize reduction 161, result has 12.0 percent of original size [2021-11-20 06:02:27,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 110 treesize of output 96 [2021-11-20 06:02:27,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:28,006 INFO L354 Elim1Store]: treesize reduction 386, result has 12.3 percent of original size [2021-11-20 06:02:28,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 113 [2021-11-20 06:02:34,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-20 06:02:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:34,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:35,617 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse0) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) 1))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:02:37,487 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (select (let ((.cse0 (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:03:46,396 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_200| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (select (let ((.cse0 (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3)) 1)))) (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3 8) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 8)) 1))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ 2 c_~N~0)))) is different from false [2021-11-20 06:03:49,002 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8)))) (store .cse6 .cse7 (+ (select .cse6 .cse7) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ 1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| 2))) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:03:51,097 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int) (|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_200| 2) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse6 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (store .cse8 .cse9 (+ (select .cse8 .cse9) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8)))) (store .cse6 .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse6 .cse7)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)))) is different from false [2021-11-20 06:03:53,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int) (|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8))) (.cse6 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) 8))) (store .cse8 .cse9 (+ (select .cse8 .cse9) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse6 .cse7 (+ (select .cse6 .cse7) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ 1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| 2) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2021-11-20 06:07:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2021-11-20 06:07:10,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973498848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:10,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:10,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30, 31] total 93 [2021-11-20 06:07:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213584584] [2021-11-20 06:07:10,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:10,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-20 06:07:10,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-20 06:07:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=6860, Unknown=76, NotChecked=1050, Total=8556 [2021-11-20 06:07:10,069 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand has 93 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:07:44,038 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse20 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (.cse18 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8)))) (store .cse6 .cse7 (+ (select .cse6 .cse7) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ 1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| 2))) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int) (|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (let ((.cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse13 (let ((.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8))) (.cse14 (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) 8))) (store .cse16 .cse17 (+ (select .cse16 .cse17) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse14 .cse15 (+ (select .cse14 .cse15) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse8 (let ((.cse11 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse11 .cse12 (+ 1 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))) (.cse9 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse9) (+ (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse9)) 1))))) .cse12)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| 2) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= .cse18 4) (= (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1) (= |c_ULTIMATE.start_main_~i~0#1| 1) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= (+ .cse20 4) (* 2 .cse18)) (= (+ .cse20 3) (+ .cse18 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= c_~N~0 3) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< (+ 536870911 (* 4294967296 (div c_~N~0 4294967296))) c_~N~0)) (< 2 c_~N~0)))) is different from false [2021-11-20 06:07:46,031 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse10 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int) (|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_200| 2) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse6 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (store .cse8 .cse9 (+ (select .cse8 .cse9) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8)))) (store .cse6 .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse6 .cse7)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= .cse10 4) (= (+ .cse11 4) (* 2 .cse10)) (= (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1) (= (+ .cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (+ 3 .cse11)) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= c_~N~0 3) (< 2 c_~N~0)))) is different from false [2021-11-20 06:07:48,050 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_204| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_204| 8)))) (store .cse6 .cse7 (+ (select .cse6 .cse7) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5))) (let ((.cse0 (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (store .cse3 .cse4 (+ 1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))))) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))))) .cse4)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| 2))) (< |v_ULTIMATE.start_main_~i~0#1_204| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= .cse8 4) (= (+ (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 4) (* 2 .cse8)) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (let ((.cse11 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (or (= .cse10 .cse11) (= .cse11 1))) (= (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse10)))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= c_~N~0 3) (< 2 c_~N~0)))) is different from false [2021-11-20 06:08:00,091 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse0)) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) 1))) (forall ((|v_ULTIMATE.start_main_~i~0#1_200| Int)) (or (= (select (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_200| 8))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 1))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ 2 c_~N~0)) (< |v_ULTIMATE.start_main_~i~0#1_200| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse2 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (+ .cse2 1))) (and (= (+ 2 .cse2) (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|)) (= (+ (select .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) 1) (* 2 .cse2)) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (let ((.cse5 (select .cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (or (= .cse4 .cse5) (= .cse5 1))) (= (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse4) (= 3 .cse2))))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (<= c_~N~0 3) (< 2 c_~N~0)) is different from false [2021-11-20 06:08:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:10,418 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2021-11-20 06:08:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-20 06:08:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 0 states have call successors, (0), 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 44 [2021-11-20 06:08:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:10,419 INFO L225 Difference]: With dead ends: 145 [2021-11-20 06:08:10,419 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:08:10,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 10 IntricatePredicates, 2 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 323.3s TimeCoverageRelationStatistics Valid=931, Invalid=11894, Unknown=97, NotChecked=2330, Total=15252 [2021-11-20 06:08:10,424 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1204 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:10,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 225 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 870 Invalid, 0 Unknown, 1204 Unchecked, 1.1s Time] [2021-11-20 06:08:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:08:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:08:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:08:10,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-11-20 06:08:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:10,426 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:08:10,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:08:10,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:08:10,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:08:10,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:10,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba27423-6878-4ab2-9a64-b1f53e41f09a/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 06:08:10,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:08:23,705 WARN L227 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 195 DAG size of output: 187 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-20 06:08:43,803 WARN L227 SmtUtils]: Spent 19.97s on a formula simplification. DAG size of input: 233 DAG size of output: 154 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)