./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum_array-2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS --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 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 04:06:35,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:06:35,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:06:35,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:06:35,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:06:35,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:06:35,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:06:35,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:06:35,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:06:35,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:06:35,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:06:35,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:06:35,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:06:35,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:06:35,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:06:35,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:06:35,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:06:35,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:06:35,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:06:35,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:06:35,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:06:35,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:06:35,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:06:35,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:06:35,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:06:35,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:06:35,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:06:35,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:06:35,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:06:35,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:06:35,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:06:35,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:06:35,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:06:35,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:06:35,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:06:35,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:06:35,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:06:35,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:06:35,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:06:35,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:06:35,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:06:35,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:06:35,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:06:35,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:06:35,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:06:35,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:06:35,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:06:35,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:06:35,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:06:35,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:06:35,766 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:06:35,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:06:35,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:06:35,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:06:35,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:06:35,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:06:35,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:06:35,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:06:35,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:06:35,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:06:35,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:06:35,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:06:35,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:06:35,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:06:35,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:06:35,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:06:35,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:06:35,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:06:35,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:06:35,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:06:35,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:06:35,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:06:35,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:06:35,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:06:35,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:06:35,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:06:35,774 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 [2022-11-23 04:06:36,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:06:36,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:06:36,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:06:36,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:06:36,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:06:36,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/loops/sum_array-2-2.i [2022-11-23 04:06:39,411 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:06:39,654 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:06:39,655 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/sv-benchmarks/c/loops/sum_array-2-2.i [2022-11-23 04:06:39,663 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/data/6b2c06317/8f46bf0a2be349729dba661fefd4bdc3/FLAGfb1e68807 [2022-11-23 04:06:39,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/data/6b2c06317/8f46bf0a2be349729dba661fefd4bdc3 [2022-11-23 04:06:39,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:06:39,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:06:39,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:06:39,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:06:39,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:06:39,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:39,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38424a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39, skipping insertion in model container [2022-11-23 04:06:39,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:39,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:06:39,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:06:39,915 WARN L237 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_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/sv-benchmarks/c/loops/sum_array-2-2.i[940,953] [2022-11-23 04:06:39,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:06:39,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:06:39,959 WARN L237 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_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/sv-benchmarks/c/loops/sum_array-2-2.i[940,953] [2022-11-23 04:06:39,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:06:39,987 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:06:39,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39 WrapperNode [2022-11-23 04:06:39,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:06:39,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:06:39,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:06:39,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:06:39,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,035 INFO L138 Inliner]: procedures = 18, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2022-11-23 04:06:40,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:06:40,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:06:40,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:06:40,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:06:40,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:06:40,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:06:40,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:06:40,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:06:40,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (1/1) ... [2022-11-23 04:06:40,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:06:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:06:40,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:06:40,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:06:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:06:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:06:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:06:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:06:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:06:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:06:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 04:06:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:06:40,251 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:06:40,253 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:06:40,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:06:40,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:06:40,765 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 04:06:40,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:06:40 BoogieIcfgContainer [2022-11-23 04:06:40,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:06:40,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:06:40,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:06:40,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:06:40,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:06:39" (1/3) ... [2022-11-23 04:06:40,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3755c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:06:40, skipping insertion in model container [2022-11-23 04:06:40,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:39" (2/3) ... [2022-11-23 04:06:40,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3755c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:06:40, skipping insertion in model container [2022-11-23 04:06:40,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:06:40" (3/3) ... [2022-11-23 04:06:40,788 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array-2-2.i [2022-11-23 04:06:40,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:06:40,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:06:40,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:06:40,907 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@52438661, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:06:40,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 04:06:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 04:06:40,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:06:40,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:06:40,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:06:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:06:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2074674181, now seen corresponding path program 1 times [2022-11-23 04:06:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:06:40,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562538962] [2022-11-23 04:06:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:06:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:06:41,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:06:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562538962] [2022-11-23 04:06:41,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562538962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:06:41,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:06:41,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:06:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129814681] [2022-11-23 04:06:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:06:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 04:06:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:06:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 04:06:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 04:06:41,191 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:06:41,222 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2022-11-23 04:06:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 04:06:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 04:06:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:06:41,236 INFO L225 Difference]: With dead ends: 45 [2022-11-23 04:06:41,237 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 04:06:41,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 04:06:41,248 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-11-23 04:06:41,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:06:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 04:06:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 04:06:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-23 04:06:41,280 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2022-11-23 04:06:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:06:41,281 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-23 04:06:41,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-23 04:06:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 04:06:41,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:06:41,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:06:41,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:06:41,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:06:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:06:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -391523617, now seen corresponding path program 1 times [2022-11-23 04:06:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:06:41,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585917536] [2022-11-23 04:06:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:41,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:06:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:06:41,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:06:41,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585917536] [2022-11-23 04:06:41,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585917536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:06:41,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:06:41,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:06:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090244947] [2022-11-23 04:06:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:06:41,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:06:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:06:41,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:06:41,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:06:41,689 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:06:41,852 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-11-23 04:06:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:06:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 04:06:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:06:41,854 INFO L225 Difference]: With dead ends: 58 [2022-11-23 04:06:41,854 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 04:06:41,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:06:41,856 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:06:41,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 29 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:06:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 04:06:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-11-23 04:06:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-23 04:06:41,863 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-11-23 04:06:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:06:41,864 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-23 04:06:41,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-23 04:06:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 04:06:41,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:06:41,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:06:41,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:06:41,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:06:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:06:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1083884881, now seen corresponding path program 1 times [2022-11-23 04:06:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:06:41,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140742569] [2022-11-23 04:06:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:06:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:06:44,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:06:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140742569] [2022-11-23 04:06:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140742569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:06:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997816399] [2022-11-23 04:06:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:06:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:06:44,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:06:44,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:06:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:45,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 04:06:45,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:06:45,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 04:06:45,355 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:45,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2022-11-23 04:06:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:06:45,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:06:45,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:45,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 199 [2022-11-23 04:06:47,388 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:47,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 153 [2022-11-23 04:06:47,426 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:47,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 151 [2022-11-23 04:06:47,467 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 177 [2022-11-23 04:06:47,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 128 [2022-11-23 04:06:47,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-23 04:06:47,613 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:47,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 85 [2022-11-23 04:06:47,640 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:47,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 200 [2022-11-23 04:06:47,669 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:47,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 83 [2022-11-23 04:06:47,684 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:47,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2022-11-23 04:06:47,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 135 [2022-11-23 04:06:47,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 84 [2022-11-23 04:06:47,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:47,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 82 [2022-11-23 04:06:48,057 INFO L321 Elim1Store]: treesize reduction 17, result has 85.0 percent of original size [2022-11-23 04:06:48,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 125 [2022-11-23 04:06:48,286 INFO L321 Elim1Store]: treesize reduction 17, result has 85.0 percent of original size [2022-11-23 04:06:48,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 483 treesize of output 400 [2022-11-23 04:06:49,119 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:49,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2022-11-23 04:06:49,141 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:49,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 483 treesize of output 1 [2022-11-23 04:06:49,204 INFO L321 Elim1Store]: treesize reduction 92, result has 18.6 percent of original size [2022-11-23 04:06:49,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 428 treesize of output 296 [2022-11-23 04:06:49,275 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:49,291 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:49,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2022-11-23 04:06:49,310 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:49,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 613 treesize of output 1 [2022-11-23 04:06:49,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:49,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 302 treesize of output 272 [2022-11-23 04:06:50,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:50,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 241 [2022-11-23 04:06:50,768 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:50,776 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:50,783 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:50,807 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:06:50,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 1 [2022-11-23 04:06:50,821 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:06:50,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 196 treesize of output 1 [2022-11-23 04:06:50,835 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:06:50,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 104 treesize of output 1 [2022-11-23 04:06:50,850 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:06:50,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 261 treesize of output 1 [2022-11-23 04:06:50,863 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:06:50,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 104 treesize of output 1 [2022-11-23 04:06:51,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:51,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 313 treesize of output 288 [2022-11-23 04:06:51,088 INFO L350 Elim1Store]: Elim1 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 194 treesize of output 145 [2022-11-23 04:06:51,397 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:06:51,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 151 [2022-11-23 04:06:51,466 INFO L321 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-11-23 04:06:51,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 246 treesize of output 234 [2022-11-23 04:06:51,815 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:51,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2022-11-23 04:06:51,834 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-23 04:06:51,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 120 [2022-11-23 04:06:51,878 INFO L321 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2022-11-23 04:06:51,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 361 treesize of output 289 [2022-11-23 04:06:51,955 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:51,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2022-11-23 04:06:51,967 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:51,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2022-11-23 04:06:51,979 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:06:51,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 1 [2022-11-23 04:06:52,002 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:52,010 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:52,014 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:52,031 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:52,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2022-11-23 04:06:52,037 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:52,051 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:52,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2022-11-23 04:06:52,062 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:52,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2022-11-23 04:06:52,081 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:52,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2022-11-23 04:06:52,096 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:52,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2022-11-23 04:06:52,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:52,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 313 treesize of output 277 [2022-11-23 04:06:52,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:06:52,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 550 treesize of output 462 [2022-11-23 04:06:53,868 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:53,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2022-11-23 04:06:53,879 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:53,884 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:06:53,900 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:53,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2022-11-23 04:06:53,916 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:53,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2022-11-23 04:06:53,934 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:53,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2022-11-23 04:06:53,956 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-23 04:06:53,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2022-11-23 04:06:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:06:54,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997816399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:06:54,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:06:54,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2022-11-23 04:06:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629458604] [2022-11-23 04:06:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:06:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:06:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:06:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:06:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:06:54,134 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:06:54,707 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-23 04:06:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 04:06:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-23 04:06:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:06:54,708 INFO L225 Difference]: With dead ends: 39 [2022-11-23 04:06:54,708 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 04:06:54,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-23 04:06:54,710 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 116 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 04:06:54,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 57 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 04:06:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 04:06:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2022-11-23 04:06:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-23 04:06:54,719 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2022-11-23 04:06:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:06:54,719 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-23 04:06:54,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:06:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-23 04:06:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 04:06:54,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:06:54,721 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:06:54,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:06:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:06:54,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:06:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:06:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -924768315, now seen corresponding path program 1 times [2022-11-23 04:06:54,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:06:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712977801] [2022-11-23 04:06:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:54,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:06:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:06:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:06:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712977801] [2022-11-23 04:06:55,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712977801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:06:55,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808120260] [2022-11-23 04:06:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:55,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:06:55,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:06:55,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:06:55,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:06:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:55,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 04:06:55,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:06:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:06:55,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:07:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:07:03,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808120260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:07:03,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:07:03,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-23 04:07:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743821910] [2022-11-23 04:07:03,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:07:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 04:07:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:07:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 04:07:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=108, Unknown=2, NotChecked=0, Total=156 [2022-11-23 04:07:03,747 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:07:04,193 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2022-11-23 04:07:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 04:07:04,194 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-23 04:07:04,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:07:04,195 INFO L225 Difference]: With dead ends: 85 [2022-11-23 04:07:04,195 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 04:07:04,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=46, Invalid=108, Unknown=2, NotChecked=0, Total=156 [2022-11-23 04:07:04,196 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 04:07:04,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 93 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 04:07:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 04:07:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2022-11-23 04:07:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-11-23 04:07:04,207 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 26 [2022-11-23 04:07:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:07:04,207 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-11-23 04:07:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-11-23 04:07:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 04:07:04,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:07:04,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:07:04,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:07:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:04,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:07:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:07:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 279637269, now seen corresponding path program 2 times [2022-11-23 04:07:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:07:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228150395] [2022-11-23 04:07:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:07:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:07:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:07:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:07:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:07:09,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228150395] [2022-11-23 04:07:09,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228150395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:07:09,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368985135] [2022-11-23 04:07:09,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:07:09,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:09,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:07:09,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:07:09,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 04:07:09,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:07:09,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:07:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 04:07:09,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:07:09,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 04:07:09,550 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:09,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2022-11-23 04:07:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:07:09,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:07:10,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:10,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2022-11-23 04:07:11,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:11,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 149 [2022-11-23 04:07:11,221 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:11,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2022-11-23 04:07:11,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:11,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 90 [2022-11-23 04:07:11,262 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:07:11,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 95 [2022-11-23 04:07:11,303 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:07:11,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 146 [2022-11-23 04:07:11,335 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:07:11,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2022-11-23 04:07:11,383 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:07:11,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 165 [2022-11-23 04:07:11,415 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 04:07:11,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 91 [2022-11-23 04:07:11,433 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:11,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 1 [2022-11-23 04:07:11,454 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-23 04:07:11,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 130 [2022-11-23 04:07:11,485 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-23 04:07:11,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 56 [2022-11-23 04:07:12,590 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2022-11-23 04:07:12,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 223 [2022-11-23 04:07:12,828 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:12,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2022-11-23 04:07:12,848 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:12,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 1 [2022-11-23 04:07:12,868 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:12,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2022-11-23 04:07:12,939 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-11-23 04:07:12,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 103 [2022-11-23 04:07:12,969 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:12,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2022-11-23 04:07:12,986 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:12,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2022-11-23 04:07:13,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:13,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 174 [2022-11-23 04:07:13,604 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:13,611 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:13,617 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:13,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:13,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 338 treesize of output 272 [2022-11-23 04:07:14,843 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:14,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:14,861 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:14,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2022-11-23 04:07:14,879 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:14,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2022-11-23 04:07:14,899 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:14,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2022-11-23 04:07:15,082 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2022-11-23 04:07:15,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 424 [2022-11-23 04:07:16,212 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 1 [2022-11-23 04:07:16,230 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2022-11-23 04:07:16,324 INFO L321 Elim1Store]: treesize reduction 88, result has 27.3 percent of original size [2022-11-23 04:07:16,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 346 treesize of output 250 [2022-11-23 04:07:16,516 INFO L321 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-11-23 04:07:16,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 638 treesize of output 398 [2022-11-23 04:07:16,648 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:16,667 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2022-11-23 04:07:16,686 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2022-11-23 04:07:16,705 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2022-11-23 04:07:16,725 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 1 [2022-11-23 04:07:16,743 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:16,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2022-11-23 04:07:16,767 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 04:07:16,767 INFO L350 Elim1Store]: Elim1 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 220 treesize of output 1 [2022-11-23 04:07:16,781 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:07:16,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 374 treesize of output 1 [2022-11-23 04:07:16,798 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:07:16,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 719 treesize of output 1 [2022-11-23 04:07:16,810 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 04:07:16,810 INFO L350 Elim1Store]: Elim1 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 66 treesize of output 1 [2022-11-23 04:07:16,826 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:07:16,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 565 treesize of output 1 [2022-11-23 04:07:16,839 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:07:16,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 220 treesize of output 1 [2022-11-23 04:07:16,858 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 187 treesize of output 1 [2022-11-23 04:07:16,874 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 116 treesize of output 1 [2022-11-23 04:07:16,892 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 285 treesize of output 1 [2022-11-23 04:07:16,911 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 116 treesize of output 1 [2022-11-23 04:07:16,929 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 44 treesize of output 1 [2022-11-23 04:07:16,946 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-23 04:07:16,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 214 treesize of output 1 [2022-11-23 04:07:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 04:07:17,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368985135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:07:17,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:07:17,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2022-11-23 04:07:17,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068344610] [2022-11-23 04:07:17,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:07:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 04:07:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:07:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 04:07:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2022-11-23 04:07:17,427 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:07:19,327 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2022-11-23 04:07:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 04:07:19,328 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-23 04:07:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:07:19,329 INFO L225 Difference]: With dead ends: 53 [2022-11-23 04:07:19,329 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 04:07:19,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 04:07:19,331 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 109 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 04:07:19,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 101 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 04:07:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 04:07:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2022-11-23 04:07:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-23 04:07:19,344 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 36 [2022-11-23 04:07:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:07:19,345 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-23 04:07:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-23 04:07:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 04:07:19,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:07:19,347 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:07:19,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 04:07:19,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:19,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:07:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:07:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1046792405, now seen corresponding path program 3 times [2022-11-23 04:07:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:07:19,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070615088] [2022-11-23 04:07:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:07:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:07:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:07:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 04:07:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:07:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070615088] [2022-11-23 04:07:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070615088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:07:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623528144] [2022-11-23 04:07:20,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 04:07:20,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:07:20,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:07:20,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 04:07:20,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 04:07:20,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:07:20,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 04:07:20,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:07:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 04:07:20,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:07:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 04:07:20,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623528144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:07:20,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:07:20,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2022-11-23 04:07:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004345872] [2022-11-23 04:07:20,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:07:20,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 04:07:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:07:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 04:07:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:07:20,866 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:07:21,439 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2022-11-23 04:07:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 04:07:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-23 04:07:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:07:21,452 INFO L225 Difference]: With dead ends: 115 [2022-11-23 04:07:21,452 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 04:07:21,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:07:21,454 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 116 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 04:07:21,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 153 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 04:07:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 04:07:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2022-11-23 04:07:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-11-23 04:07:21,479 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 40 [2022-11-23 04:07:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:07:21,479 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-11-23 04:07:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-11-23 04:07:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 04:07:21,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:07:21,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:07:21,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 04:07:21,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:21,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:07:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:07:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1454597637, now seen corresponding path program 4 times [2022-11-23 04:07:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:07:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897689132] [2022-11-23 04:07:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:07:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:07:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:07:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:07:26,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:07:26,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897689132] [2022-11-23 04:07:26,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897689132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:07:26,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819108323] [2022-11-23 04:07:26,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 04:07:26,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:07:26,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:07:26,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 04:07:27,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 04:07:27,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:07:27,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-23 04:07:27,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:07:27,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 04:07:27,628 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:27,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2022-11-23 04:07:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:07:28,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:07:28,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:28,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2022-11-23 04:07:29,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:29,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 208 [2022-11-23 04:07:29,239 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 04:07:29,240 INFO L350 Elim1Store]: Elim1 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 374 treesize of output 1 [2022-11-23 04:07:29,253 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 04:07:29,254 INFO L350 Elim1Store]: Elim1 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 719 treesize of output 1 [2022-11-23 04:07:29,263 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 04:07:29,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:29,269 INFO L350 Elim1Store]: Elim1 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 66 treesize of output 62 [2022-11-23 04:07:29,287 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 04:07:29,287 INFO L350 Elim1Store]: Elim1 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 565 treesize of output 1 [2022-11-23 04:07:29,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:29,325 INFO L350 Elim1Store]: Elim1 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 281 treesize of output 257 [2022-11-23 04:07:30,654 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2022-11-23 04:07:30,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 679 treesize of output 490 [2022-11-23 04:07:30,967 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:30,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2022-11-23 04:07:30,983 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:30,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:31,059 INFO L321 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-11-23 04:07:31,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 614 treesize of output 374 [2022-11-23 04:07:31,094 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:31,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:31,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 133 [2022-11-23 04:07:31,506 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2022-11-23 04:07:31,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 703 treesize of output 1 [2022-11-23 04:07:31,526 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-23 04:07:31,528 INFO L350 Elim1Store]: Elim1 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 212 treesize of output 1 [2022-11-23 04:07:31,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:31,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 138 [2022-11-23 04:07:32,186 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2022-11-23 04:07:32,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 215 [2022-11-23 04:07:32,437 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:32,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 533 treesize of output 1 [2022-11-23 04:07:32,456 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:32,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 679 treesize of output 1 [2022-11-23 04:07:32,526 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-11-23 04:07:32,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 103 [2022-11-23 04:07:32,556 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:32,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2022-11-23 04:07:32,569 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:32,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:32,589 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:32,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 1 [2022-11-23 04:07:32,599 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:32,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 1 [2022-11-23 04:07:32,611 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:32,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 1 [2022-11-23 04:07:32,620 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:32,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 1 [2022-11-23 04:07:32,629 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 04:07:32,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 1 [2022-11-23 04:07:32,650 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:32,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:07:32,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 338 treesize of output 272 [2022-11-23 04:07:33,675 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:33,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2022-11-23 04:07:33,694 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:33,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 533 treesize of output 1 [2022-11-23 04:07:33,841 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2022-11-23 04:07:33,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 679 treesize of output 490 [2022-11-23 04:07:34,027 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:34,092 INFO L321 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2022-11-23 04:07:34,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 322 treesize of output 218 [2022-11-23 04:07:34,187 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:34,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2022-11-23 04:07:34,198 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:34,214 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-23 04:07:34,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2022-11-23 04:07:34,220 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:34,225 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:34,230 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 04:07:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 04:07:34,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819108323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:07:34,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:07:34,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2022-11-23 04:07:34,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791286020] [2022-11-23 04:07:34,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:07:34,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-23 04:07:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:07:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-23 04:07:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 04:07:34,841 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:07:37,582 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2022-11-23 04:07:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 04:07:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-23 04:07:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:07:37,583 INFO L225 Difference]: With dead ends: 67 [2022-11-23 04:07:37,583 INFO L226 Difference]: Without dead ends: 65 [2022-11-23 04:07:37,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 04:07:37,585 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 203 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:07:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 241 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 04:07:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-23 04:07:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2022-11-23 04:07:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-11-23 04:07:37,619 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 50 [2022-11-23 04:07:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:07:37,620 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-11-23 04:07:37,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:07:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-11-23 04:07:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 04:07:37,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:07:37,626 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:07:37,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 04:07:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:37,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:07:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:07:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1506803439, now seen corresponding path program 5 times [2022-11-23 04:07:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:07:37,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790786242] [2022-11-23 04:07:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:07:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:07:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:07:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 04:07:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:07:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790786242] [2022-11-23 04:07:38,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790786242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:07:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429215422] [2022-11-23 04:07:38,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 04:07:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:07:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:07:38,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:07:38,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ebf6c40-3d18-4a9e-9fe1-6651cc8dc367/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process