./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array11_pattern.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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array11_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/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 c3ac08a3f6fb5579b9b2ae158efc8988dd3312e617d74223198803ffe0b335cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:00:13,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:00:13,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:00:13,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:00:13,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:00:13,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:00:13,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:00:13,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:00:13,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:00:13,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:00:13,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:00:13,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:00:13,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:00:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:00:13,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:00:13,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:00:13,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:00:13,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:00:13,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:00:13,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:00:13,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:00:13,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:00:13,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:00:13,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:00:13,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:00:13,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:00:13,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:00:13,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:00:13,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:00:13,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:00:13,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:00:13,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:00:13,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:00:13,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:00:13,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:00:13,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:00:13,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:00:13,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:00:13,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:00:13,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:00:13,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:00:13,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:00:13,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:00:13,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:00:13,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:00:13,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:00:13,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:00:13,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:00:13,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:00:13,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:00:13,739 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:00:13,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:00:13,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:00:13,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:00:13,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:00:13,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:00:13,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:00:13,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:00:13,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:00:13,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:00:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:00:13,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:00:13,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:00:13,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:00:13,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:00:13,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:00:13,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:13,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:00:13,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:00:13,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:00:13,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:00:13,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:00:13,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:00:13,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:00:13,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:00:13,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:00:13,747 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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ac08a3f6fb5579b9b2ae158efc8988dd3312e617d74223198803ffe0b335cb [2021-11-20 07:00:14,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:00:14,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:00:14,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:00:14,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:00:14,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:00:14,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-patterns/array11_pattern.c [2021-11-20 07:00:14,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/73c153d32/c6a9a61da4394235b98ad3c6e93583d7/FLAGe4a177a48 [2021-11-20 07:00:14,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:00:14,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c [2021-11-20 07:00:14,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/73c153d32/c6a9a61da4394235b98ad3c6e93583d7/FLAGe4a177a48 [2021-11-20 07:00:15,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/73c153d32/c6a9a61da4394235b98ad3c6e93583d7 [2021-11-20 07:00:15,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:00:15,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:00:15,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:15,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:00:15,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:00:15,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176c5c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15, skipping insertion in model container [2021-11-20 07:00:15,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:00:15,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:00:15,275 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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2021-11-20 07:00:15,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:15,300 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:00:15,313 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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2021-11-20 07:00:15,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:15,337 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:00:15,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15 WrapperNode [2021-11-20 07:00:15,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:15,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:15,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:00:15,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:00:15,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,380 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2021-11-20 07:00:15,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:15,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:00:15,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:00:15,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:00:15,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:00:15,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:00:15,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:00:15,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:00:15,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (1/1) ... [2021-11-20 07:00:15,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:15,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:00:15,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:00:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:00:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:00:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:00:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:00:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:00:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:00:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:00:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:00:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:00:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:00:15,560 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:00:15,562 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:00:15,822 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:00:15,827 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:00:15,828 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:00:15,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:15 BoogieIcfgContainer [2021-11-20 07:00:15,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:00:15,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:00:15,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:00:15,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:00:15,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:00:15" (1/3) ... [2021-11-20 07:00:15,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4eae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:15, skipping insertion in model container [2021-11-20 07:00:15,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:15" (2/3) ... [2021-11-20 07:00:15,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4eae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:15, skipping insertion in model container [2021-11-20 07:00:15,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:15" (3/3) ... [2021-11-20 07:00:15,853 INFO L111 eAbstractionObserver]: Analyzing ICFG array11_pattern.c [2021-11-20 07:00:15,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:00:15,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:00:15,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:00:15,928 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 07:00:15,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:00:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:00:15,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:15,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:15,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1199380475, now seen corresponding path program 1 times [2021-11-20 07:00:15,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:15,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719269779] [2021-11-20 07:00:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:15,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:00:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:16,103 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 07:00:16,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:16,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719269779] [2021-11-20 07:00:16,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719269779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:16,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:16,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:00:16,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156280044] [2021-11-20 07:00:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:16,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:00:16,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:00:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:00:16,157 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:00:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:16,181 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-20 07:00:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:00:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 07:00:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:16,192 INFO L225 Difference]: With dead ends: 51 [2021-11-20 07:00:16,193 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 07:00:16,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 07:00:16,201 INFO L933 BasicCegarLoop]: 31 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, 31 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 07:00:16,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:00:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 07:00:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 07:00:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-20 07:00:16,262 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2021-11-20 07:00:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:16,262 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-20 07:00:16,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:00:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-20 07:00:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 07:00:16,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:16,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:16,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:00:16,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 966180883, now seen corresponding path program 1 times [2021-11-20 07:00:16,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509588264] [2021-11-20 07:00:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:16,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:16,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:00:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016796342] [2021-11-20 07:00:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:16,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:16,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:16,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:16,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:00:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:16,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:00:16,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:00:16,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:00:16,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509588264] [2021-11-20 07:00:16,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:00:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016796342] [2021-11-20 07:00:16,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016796342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:16,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:16,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:00:16,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918398646] [2021-11-20 07:00:16,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:16,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:00:16,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:00:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:00:16,562 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:16,585 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-20 07:00:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:00:16,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-20 07:00:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:16,587 INFO L225 Difference]: With dead ends: 28 [2021-11-20 07:00:16,587 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 07:00:16,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:00:16,589 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:16,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:00:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 07:00:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 07:00:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-20 07:00:16,595 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 24 [2021-11-20 07:00:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:16,597 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-20 07:00:16,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-20 07:00:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 07:00:16,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:16,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:16,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 07:00:16,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:16,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 840126261, now seen corresponding path program 1 times [2021-11-20 07:00:16,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:16,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059937235] [2021-11-20 07:00:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:16,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:16,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:00:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411444225] [2021-11-20 07:00:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:16,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:16,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:16,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:16,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:00:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:16,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:00:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:17,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:00:17,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:17,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059937235] [2021-11-20 07:00:17,080 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:00:17,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411444225] [2021-11-20 07:00:17,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411444225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:17,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:17,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:00:17,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956223820] [2021-11-20 07:00:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:00:17,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:00:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:00:17,083 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:17,172 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-11-20 07:00:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:00:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-11-20 07:00:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:17,176 INFO L225 Difference]: With dead ends: 45 [2021-11-20 07:00:17,176 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 07:00:17,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:17,181 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:17,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:00:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 07:00:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-20 07:00:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-20 07:00:17,190 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 26 [2021-11-20 07:00:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:17,190 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-20 07:00:17,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:00:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-20 07:00:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:00:17,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:17,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:17,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:00:17,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:17,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -760544265, now seen corresponding path program 1 times [2021-11-20 07:00:17,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438610646] [2021-11-20 07:00:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:17,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:00:17,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085982866] [2021-11-20 07:00:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:17,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:17,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:17,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:00:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:00:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:17,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:00:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:00:18,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438610646] [2021-11-20 07:00:18,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:00:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085982866] [2021-11-20 07:00:18,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085982866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:00:18,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:00:18,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-20 07:00:18,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998455121] [2021-11-20 07:00:18,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:00:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:00:18,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:00:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:00:18,024 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:00:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:18,252 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2021-11-20 07:00:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:00:18,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-11-20 07:00:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:18,254 INFO L225 Difference]: With dead ends: 90 [2021-11-20 07:00:18,254 INFO L226 Difference]: Without dead ends: 72 [2021-11-20 07:00:18,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:00:18,256 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:18,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 97 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:00:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-20 07:00:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 37. [2021-11-20 07:00:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:00:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-11-20 07:00:18,265 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 28 [2021-11-20 07:00:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:18,265 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-11-20 07:00:18,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:00:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-11-20 07:00:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:00:18,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:18,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:18,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:00:18,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:18,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -367517255, now seen corresponding path program 1 times [2021-11-20 07:00:18,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:18,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745673540] [2021-11-20 07:00:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:18,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:18,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:00:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13732977] [2021-11-20 07:00:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:18,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:18,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:18,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:18,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:00:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:18,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 07:00:18,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:18,649 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 07:00:18,720 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 39 treesize of output 23 [2021-11-20 07:00:19,267 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-20 07:00:19,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 87 [2021-11-20 07:00:19,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:00:19,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 41 treesize of output 22 [2021-11-20 07:00:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:00:19,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 52 treesize of output 26 [2021-11-20 07:00:19,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:00:19,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:00:19,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:00:19,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 120 [2021-11-20 07:00:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:00:19,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 65 treesize of output 28 [2021-11-20 07:00:19,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:00:19,931 INFO L354 Elim1Store]: treesize reduction 32, result has 17.9 percent of original size [2021-11-20 07:00:19,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 30 [2021-11-20 07:00:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:20,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:01:19,007 WARN L227 SmtUtils]: Spent 29.68s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:02:35,306 WARN L227 SmtUtils]: Spent 41.90s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:03:18,033 WARN L227 SmtUtils]: Spent 26.09s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:05:12,947 WARN L227 SmtUtils]: Spent 1.91m on a formula simplification. DAG size of input: 183 DAG size of output: 122 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:05:12,949 INFO L354 Elim1Store]: treesize reduction 1076, result has 30.9 percent of original size [2021-11-20 07:05:12,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 88506 treesize of output 33842 [2021-11-20 07:05:19,134 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:05:19,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:05:19,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33842 treesize of output 33586 [2021-11-20 07:05:31,454 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:05:31,454 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:05:31,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33586 treesize of output 33330 [2021-11-20 07:05:32,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:05:32,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33330 treesize of output 32818 [2021-11-20 07:05:44,080 WARN L227 SmtUtils]: Spent 11.57s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:05:44,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:05:44,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32818 treesize of output 32754 [2021-11-20 07:05:44,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:05:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745673540] [2021-11-20 07:05:44,586 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:05:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13732977] [2021-11-20 07:05:44,586 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:05:44,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:44,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 07:05:44,587 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-20 07:05:44,587 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 07:05:44,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:05:44,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:44,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:05:44,814 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 07:05:44,815 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:05:44,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:05:44 BoogieIcfgContainer [2021-11-20 07:05:44,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:05:44,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:05:44,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:05:44,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:05:44,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:15" (3/4) ... [2021-11-20 07:05:44,840 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:05:44,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:05:44,845 INFO L158 Benchmark]: Toolchain (without parser) took 329809.47ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 77.6MB in the beginning and 83.7MB in the end (delta: -6.1MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-20 07:05:44,845 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:05:44,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.84ms. Allocated memory is still 109.1MB. Free memory was 77.4MB in the beginning and 85.2MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:05:44,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.87ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:05:44,847 INFO L158 Benchmark]: Boogie Preprocessor took 45.58ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:05:44,847 INFO L158 Benchmark]: RCFGBuilder took 402.34ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 71.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:05:44,848 INFO L158 Benchmark]: TraceAbstraction took 329004.39ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 83.7MB in the end (delta: -12.7MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2021-11-20 07:05:44,848 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:05:44,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.84ms. Allocated memory is still 109.1MB. Free memory was 77.4MB in the beginning and 85.2MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.87ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.58ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.34ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 71.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 329004.39ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 83.7MB in the end (delta: -12.7MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 33]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L42] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L42] RET assume_abort_if_not(ARR_SIZE > 0) [L44] int array1[ARR_SIZE] ; [L45] int array2[ARR_SIZE] ; [L46] int count = 0, num = -1 ; [L47] signed long long sum = 0 ; [L48] int temp ; [L49] signed long long index ; [L51] count=0 [L51] COND TRUE count=0 && index < ARR_SIZE) [L31] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L63] array1[index] = num * (num * (num * (num *index))) [L64] EXPR (index == ARR_SIZE-1) ? index : (num * index) [L64] array2[index] = (index == ARR_SIZE-1) ? index : (num * index) [L67] temp = __VERIFIER_nondet_int() [L68] COND TRUE temp == 0 [L71] count=0 [L71] COND TRUE count main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/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 -> c3ac08a3f6fb5579b9b2ae158efc8988dd3312e617d74223198803ffe0b335cb [2021-11-20 07:05:47,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:05:47,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:05:47,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:05:47,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:05:47,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:05:47,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-patterns/array11_pattern.c [2021-11-20 07:05:47,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/69e7d1af7/953581d123aa4fa7bccd971931a44d05/FLAGcfc0721ce [2021-11-20 07:05:48,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:05:48,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c [2021-11-20 07:05:48,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/69e7d1af7/953581d123aa4fa7bccd971931a44d05/FLAGcfc0721ce [2021-11-20 07:05:48,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/data/69e7d1af7/953581d123aa4fa7bccd971931a44d05 [2021-11-20 07:05:48,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:05:48,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:05:48,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:05:48,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:05:48,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:05:48,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:05:48" (1/1) ... [2021-11-20 07:05:48,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211fff35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:48, skipping insertion in model container [2021-11-20 07:05:48,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:05:48" (1/1) ... [2021-11-20 07:05:48,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:05:48,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:05:48,967 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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2021-11-20 07:05:48,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:05:48,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:05:49,017 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_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2021-11-20 07:05:49,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:05:49,046 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:05:49,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49 WrapperNode [2021-11-20 07:05:49,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:05:49,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:05:49,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:05:49,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:05:49,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,103 INFO L137 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2021-11-20 07:05:49,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:05:49,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:05:49,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:05:49,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:05:49,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:05:49,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:05:49,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:05:49,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:05:49,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (1/1) ... [2021-11-20 07:05:49,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:05:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:05:49,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:05:49,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:05:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:05:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:05:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:05:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:05:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:05:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 07:05:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:05:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:05:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:05:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:05:49,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:05:49,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:05:49,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:05:49,633 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:05:49,633 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:05:49,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:05:49 BoogieIcfgContainer [2021-11-20 07:05:49,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:05:49,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:05:49,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:05:49,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:05:49,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:05:48" (1/3) ... [2021-11-20 07:05:49,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b348008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:05:49, skipping insertion in model container [2021-11-20 07:05:49,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:05:49" (2/3) ... [2021-11-20 07:05:49,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b348008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:05:49, skipping insertion in model container [2021-11-20 07:05:49,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:05:49" (3/3) ... [2021-11-20 07:05:49,644 INFO L111 eAbstractionObserver]: Analyzing ICFG array11_pattern.c [2021-11-20 07:05:49,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:05:49,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:05:49,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:05:49,705 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 07:05:49,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:05:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:05:49,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:49,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:49,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1199380475, now seen corresponding path program 1 times [2021-11-20 07:05:49,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:49,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528017768] [2021-11-20 07:05:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:49,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:49,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:49,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:49,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:05:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:49,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:05:49,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:50,034 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 07:05:50,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:50,076 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 07:05:50,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528017768] [2021-11-20 07:05:50,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528017768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:50,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:50,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:05:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510522917] [2021-11-20 07:05:50,081 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:50,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:05:50,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:05:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:05:50,116 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:05:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:50,135 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-20 07:05:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:05:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 07:05:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:50,145 INFO L225 Difference]: With dead ends: 51 [2021-11-20 07:05:50,145 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 07:05:50,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 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 07:05:50,152 INFO L933 BasicCegarLoop]: 31 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, 31 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 07:05:50,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:05:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 07:05:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 07:05:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-20 07:05:50,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2021-11-20 07:05:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:50,192 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-20 07:05:50,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:05:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-20 07:05:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 07:05:50,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:50,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:50,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:50,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:50,407 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash 966180883, now seen corresponding path program 1 times [2021-11-20 07:05:50,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114887024] [2021-11-20 07:05:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:50,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:50,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:50,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:05:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:50,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:05:50,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:05:50,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:05:50,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114887024] [2021-11-20 07:05:50,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114887024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:50,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:50,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 07:05:50,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325738710] [2021-11-20 07:05:50,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:05:50,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:05:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:05:50,876 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:50,928 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-20 07:05:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:05:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-20 07:05:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:50,930 INFO L225 Difference]: With dead ends: 28 [2021-11-20 07:05:50,930 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 07:05:50,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:05:50,933 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:50,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:05:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 07:05:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 07:05:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-20 07:05:50,953 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 24 [2021-11-20 07:05:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:50,955 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-20 07:05:50,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-20 07:05:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 07:05:50,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:50,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:50,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:51,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:51,178 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 840126261, now seen corresponding path program 1 times [2021-11-20 07:05:51,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:51,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800321489] [2021-11-20 07:05:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:51,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:51,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:51,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:51,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:05:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:05:51,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:05:51,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:05:52,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:52,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800321489] [2021-11-20 07:05:52,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800321489] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:05:52,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:05:52,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-11-20 07:05:52,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094259472] [2021-11-20 07:05:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:52,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:05:52,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:05:52,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:05:52,088 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:52,101 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-11-20 07:05:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:05:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-11-20 07:05:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:52,104 INFO L225 Difference]: With dead ends: 47 [2021-11-20 07:05:52,104 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 07:05:52,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:05:52,115 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:52,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2021-11-20 07:05:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 07:05:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 07:05:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-11-20 07:05:52,130 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 26 [2021-11-20 07:05:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:52,130 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-11-20 07:05:52,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:05:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-11-20 07:05:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:05:52,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:52,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:52,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:52,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:52,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -760544265, now seen corresponding path program 1 times [2021-11-20 07:05:52,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272023123] [2021-11-20 07:05:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:52,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:52,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:52,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:05:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:52,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:05:52,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:05:53,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:05:54,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:54,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272023123] [2021-11-20 07:05:54,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272023123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:05:54,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:05:54,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2021-11-20 07:05:54,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345470025] [2021-11-20 07:05:54,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:05:54,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:05:54,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:54,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:05:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:05:54,323 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 20 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:05:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:54,639 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-11-20 07:05:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:05:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2021-11-20 07:05:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:54,642 INFO L225 Difference]: With dead ends: 68 [2021-11-20 07:05:54,642 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 07:05:54,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:05:54,645 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:54,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 118 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2021-11-20 07:05:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 07:05:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-20 07:05:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:05:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-11-20 07:05:54,656 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2021-11-20 07:05:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:54,657 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-11-20 07:05:54,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 07:05:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-11-20 07:05:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:05:54,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:54,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:54,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:54,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:54,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -367517255, now seen corresponding path program 1 times [2021-11-20 07:05:54,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780846566] [2021-11-20 07:05:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:54,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:54,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:54,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:54,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4c6152-7ca9-41d6-9e7c-a1b62c4da5ce/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:05:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:55,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 07:05:55,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:55,339 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 11 treesize of output 9 [2021-11-20 07:05:56,387 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 29 treesize of output 25 [2021-11-20 07:05:58,533 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 49 treesize of output 48 [2021-11-20 07:06:01,696 INFO L354 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2021-11-20 07:06:01,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 44 [2021-11-20 07:06:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:06:03,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:06:07,274 INFO L354 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2021-11-20 07:06:07,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 577 treesize of output 403 [2021-11-20 07:06:07,455 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:06:07,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 403 treesize of output 391 [2021-11-20 07:06:08,121 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 24 treesize of output 17 [2021-11-20 07:06:09,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:06:09,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2021-11-20 07:06:40,394 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:06:40,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 610 treesize of output 612