./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 --- 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-2329fc7 [2022-12-14 05:51:53,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:51:53,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:51:53,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:51:53,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:51:53,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:51:53,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:51:53,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:51:53,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:51:53,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:51:53,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:51:53,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:51:53,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:51:53,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:51:53,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:51:53,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:51:53,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:51:53,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:51:53,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:51:53,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:51:53,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:51:53,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:51:53,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:51:53,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:51:53,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:51:53,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:51:53,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:51:53,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:51:53,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:51:53,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:51:53,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:51:53,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:51:53,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:51:53,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:51:53,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:51:53,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:51:53,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:51:53,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:51:53,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:51:53,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:51:53,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:51:53,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:51:53,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:51:53,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:51:53,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:51:53,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:51:53,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:51:53,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:51:53,233 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:51:53,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:51:53,233 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:51:53,233 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:51:53,234 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:51:53,234 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:51:53,234 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:51:53,234 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:51:53,234 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:51:53,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:51:53,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:51:53,235 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:51:53,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:51:53,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:51:53,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:51:53,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:51:53,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:51:53,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:51:53,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:51:53,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:51:53,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:51:53,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:51:53,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 [2022-12-14 05:51:53,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:51:53,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:51:53,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:51:53,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:51:53,446 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:51:53,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2022-12-14 05:51:55,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:51:56,120 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:51:56,120 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2022-12-14 05:51:56,124 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/data/265aa7ec1/d760ab80a8af42ef8cbf8a84b1de9e6e/FLAG2229fdf3c [2022-12-14 05:51:56,546 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/data/265aa7ec1/d760ab80a8af42ef8cbf8a84b1de9e6e [2022-12-14 05:51:56,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:51:56,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:51:56,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:51:56,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:51:56,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:51:56,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b45afa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56, skipping insertion in model container [2022-12-14 05:51:56,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:51:56,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:51:56,668 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_7ab0719c-e6c7-4d13-8461-3fceb85781b4/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2022-12-14 05:51:56,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:51:56,685 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:51:56,693 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_7ab0719c-e6c7-4d13-8461-3fceb85781b4/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2022-12-14 05:51:56,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:51:56,707 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:51:56,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56 WrapperNode [2022-12-14 05:51:56,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:51:56,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:51:56,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:51:56,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:51:56,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,730 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-12-14 05:51:56,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:51:56,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:51:56,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:51:56,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:51:56,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:51:56,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:51:56,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:51:56,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:51:56,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (1/1) ... [2022-12-14 05:51:56,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:51:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:56,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:51:56,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:51:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:51:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:51:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:51:56,855 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:51:56,857 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:51:56,969 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:51:56,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:51:56,999 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 05:51:57,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:51:57 BoogieIcfgContainer [2022-12-14 05:51:57,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:51:57,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:51:57,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:51:57,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:51:57,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:51:56" (1/3) ... [2022-12-14 05:51:57,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321827ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:51:57, skipping insertion in model container [2022-12-14 05:51:57,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:56" (2/3) ... [2022-12-14 05:51:57,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321827ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:51:57, skipping insertion in model container [2022-12-14 05:51:57,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:51:57" (3/3) ... [2022-12-14 05:51:57,009 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2022-12-14 05:51:57,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:51:57,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:51:57,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:51:57,065 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=FINITE_AUTOMATA, 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;@2f16b8d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:51:57,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:51:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2022-12-14 05:51:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:51:57,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:57,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:51:57,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1597235250, now seen corresponding path program 1 times [2022-12-14 05:51:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:57,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043972814] [2022-12-14 05:51:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:51:57,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:57,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043972814] [2022-12-14 05:51:57,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043972814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:57,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:57,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:51:57,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196491968] [2022-12-14 05:51:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:57,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:51:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:51:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:51:57,321 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 05:51:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:57,356 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2022-12-14 05:51:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:51:57,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-12-14 05:51:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:57,364 INFO L225 Difference]: With dead ends: 17 [2022-12-14 05:51:57,365 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 05:51:57,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:51:57,369 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:57,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:51:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 05:51:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 05:51:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-12-14 05:51:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2022-12-14 05:51:57,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2022-12-14 05:51:57,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:57,394 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-12-14 05:51:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 05:51:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2022-12-14 05:51:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 05:51:57,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:57,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:51:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:51:57,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1770300940, now seen corresponding path program 1 times [2022-12-14 05:51:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:57,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750454394] [2022-12-14 05:51:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:57,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:51:57,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:57,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750454394] [2022-12-14 05:51:57,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750454394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:57,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:57,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:51:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458523665] [2022-12-14 05:51:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:57,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:51:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:51:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:51:57,489 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-12-14 05:51:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:57,512 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2022-12-14 05:51:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:51:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-12-14 05:51:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:57,514 INFO L225 Difference]: With dead ends: 15 [2022-12-14 05:51:57,514 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 05:51:57,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:51:57,515 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:57,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:51:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 05:51:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-12-14 05:51:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2022-12-14 05:51:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-12-14 05:51:57,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2022-12-14 05:51:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:57,519 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-12-14 05:51:57,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-12-14 05:51:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-12-14 05:51:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:51:57,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:57,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:51:57,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:51:57,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash -957214816, now seen corresponding path program 1 times [2022-12-14 05:51:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:57,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649246870] [2022-12-14 05:51:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:51:57,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649246870] [2022-12-14 05:51:57,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649246870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:51:57,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837374788] [2022-12-14 05:51:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:57,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:57,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:51:57,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:51:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:57,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:51:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:51:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:51:57,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:51:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:51:57,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837374788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:51:57,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614182272] [2022-12-14 05:51:57,759 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:51:57,759 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:51:57,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:51:57,766 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:51:57,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:51:57,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,935 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 05:51:57,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 05:51:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:57,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-12-14 05:51:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:58,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 05:51:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:58,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,236 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 05:51:58,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 404 treesize of output 402 [2022-12-14 05:51:58,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,491 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 05:51:58,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 05:51:58,532 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 05:51:58,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 05:51:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:58,603 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:51:58,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:51:58,658 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:51:58,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '141#(and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= 3 |ULTIMATE.start_main_#t~mem9#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= 100000 |ULTIMATE.start_main_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:51:58,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:51:58,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:51:58,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-14 05:51:58,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126760829] [2022-12-14 05:51:58,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:51:58,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:51:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:51:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:51:58,805 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-14 05:51:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:58,826 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2022-12-14 05:51:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:51:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2022-12-14 05:51:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:58,827 INFO L225 Difference]: With dead ends: 20 [2022-12-14 05:51:58,827 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 05:51:58,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:51:58,829 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:58,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:51:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 05:51:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 05:51:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-12-14 05:51:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-14 05:51:58,832 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2022-12-14 05:51:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:58,833 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-14 05:51:58,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-14 05:51:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-14 05:51:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:51:58,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:58,834 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:51:58,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:51:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:59,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1834950302, now seen corresponding path program 2 times [2022-12-14 05:51:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:59,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130558154] [2022-12-14 05:51:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:51:59,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:59,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130558154] [2022-12-14 05:51:59,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130558154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:51:59,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172351521] [2022-12-14 05:51:59,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:51:59,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:59,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:59,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:51:59,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:51:59,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:51:59,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:51:59,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:51:59,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:51:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:51:59,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:51:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:51:59,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172351521] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:51:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620485058] [2022-12-14 05:51:59,404 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:51:59,404 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:51:59,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:51:59,405 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:51:59,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:51:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,480 INFO L321 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2022-12-14 05:51:59,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 72 [2022-12-14 05:51:59,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,566 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 05:51:59,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 05:51:59,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 05:51:59,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:51:59,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:59,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:59,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:59,750 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 05:51:59,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 404 treesize of output 402 [2022-12-14 05:51:59,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:51:59,989 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 05:51:59,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 05:52:00,029 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 05:52:00,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 05:52:00,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:00,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:00,089 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:52:00,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:52:00,126 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:00,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '270#(and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= 3 |ULTIMATE.start_main_#t~mem9#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= 100000 |ULTIMATE.start_main_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:52:00,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:52:00,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:52:00,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-12-14 05:52:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624131050] [2022-12-14 05:52:00,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:52:00,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:52:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:52:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:52:00,270 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:52:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:52:00,364 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-12-14 05:52:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:52:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 05:52:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:52:00,365 INFO L225 Difference]: With dead ends: 55 [2022-12-14 05:52:00,365 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 05:52:00,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=278, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:52:00,366 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 116 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:52:00,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 27 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:52:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 05:52:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 22. [2022-12-14 05:52:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-12-14 05:52:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 05:52:00,372 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2022-12-14 05:52:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:52:00,372 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 05:52:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:52:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 05:52:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 05:52:00,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:52:00,373 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2022-12-14 05:52:00,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:52:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:00,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:52:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:52:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash -572813472, now seen corresponding path program 3 times [2022-12-14 05:52:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:52:00,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107538722] [2022-12-14 05:52:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:52:00,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:52:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:52:00,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107538722] [2022-12-14 05:52:00,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107538722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:52:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367171665] [2022-12-14 05:52:00,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:52:00,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:00,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:52:00,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:52:00,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:52:01,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:52:01,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:52:01,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:52:01,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:52:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:52:01,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:52:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:52:01,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367171665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:52:01,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495082243] [2022-12-14 05:52:01,273 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:52:01,273 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:52:01,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:52:01,273 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:52:01,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:52:01,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,353 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 05:52:01,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 05:52:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-12-14 05:52:01,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 05:52:01,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:01,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,510 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 05:52:01,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 404 treesize of output 402 [2022-12-14 05:52:01,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,609 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 05:52:01,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 05:52:01,644 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 05:52:01,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 05:52:01,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:01,695 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:52:01,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:52:01,728 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:01,910 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '546#(and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= 3 |ULTIMATE.start_main_#t~mem9#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= 100000 |ULTIMATE.start_main_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:52:01,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:52:01,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:52:01,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-12-14 05:52:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533471884] [2022-12-14 05:52:01,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:52:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 05:52:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 05:52:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2022-12-14 05:52:01,912 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:52:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:52:02,169 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2022-12-14 05:52:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 05:52:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 05:52:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:52:02,172 INFO L225 Difference]: With dead ends: 124 [2022-12-14 05:52:02,172 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 05:52:02,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=607, Invalid=953, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 05:52:02,174 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 288 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:52:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 60 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:52:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 05:52:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 40. [2022-12-14 05:52:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:52:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-12-14 05:52:02,179 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 20 [2022-12-14 05:52:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:52:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-12-14 05:52:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:52:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-12-14 05:52:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 05:52:02,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:52:02,181 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1] [2022-12-14 05:52:02,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:52:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:02,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:52:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:52:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1831628238, now seen corresponding path program 4 times [2022-12-14 05:52:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:52:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054044896] [2022-12-14 05:52:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:52:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:52:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-14 05:52:02,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054044896] [2022-12-14 05:52:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054044896] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:52:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571037190] [2022-12-14 05:52:02,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:52:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:52:02,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:52:02,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:52:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:02,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 05:52:02,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:52:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-14 05:52:03,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:52:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-14 05:52:03,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571037190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:52:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335665699] [2022-12-14 05:52:03,319 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:52:03,319 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:52:03,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:52:03,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:52:03,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:52:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,383 INFO L321 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2022-12-14 05:52:03,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 72 [2022-12-14 05:52:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,468 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 05:52:03,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 05:52:03,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 05:52:03,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:03,588 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 05:52:03,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 414 treesize of output 400 [2022-12-14 05:52:03,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,645 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 05:52:03,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 05:52:03,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,679 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:52:03,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:52:03,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:03,727 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:52:03,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:52:03,766 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:04,135 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1099#(and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= 3 |ULTIMATE.start_main_#t~mem9#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= 100000 |ULTIMATE.start_main_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:52:04,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:52:04,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:52:04,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2022-12-14 05:52:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783050105] [2022-12-14 05:52:04,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:52:04,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 05:52:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 05:52:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1419, Invalid=1773, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:52:04,139 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 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) [2022-12-14 05:52:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:52:04,189 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2022-12-14 05:52:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 05:52:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-12-14 05:52:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:52:04,191 INFO L225 Difference]: With dead ends: 80 [2022-12-14 05:52:04,191 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 05:52:04,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2906 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1419, Invalid=1773, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:52:04,193 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:52:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:52:04,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 05:52:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 05:52:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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) [2022-12-14 05:52:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2022-12-14 05:52:04,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 38 [2022-12-14 05:52:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:52:04,201 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2022-12-14 05:52:04,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 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) [2022-12-14 05:52:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2022-12-14 05:52:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 05:52:04,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:52:04,202 INFO L195 NwaCegarLoop]: trace histogram [34, 16, 1, 1, 1, 1, 1, 1] [2022-12-14 05:52:04,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:52:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:52:04,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:52:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:52:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 977449870, now seen corresponding path program 5 times [2022-12-14 05:52:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:52:04,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586995541] [2022-12-14 05:52:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:52:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:52:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-14 05:52:05,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:05,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586995541] [2022-12-14 05:52:05,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586995541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:52:05,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968265591] [2022-12-14 05:52:05,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:52:05,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:05,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:52:05,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:52:05,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:52:09,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-12-14 05:52:09,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:52:09,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:52:09,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:52:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 34 proven. 136 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 05:52:09,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:52:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 05:52:09,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968265591] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:52:09,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455383398] [2022-12-14 05:52:09,838 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:52:09,838 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:52:09,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:52:09,838 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:52:09,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:52:09,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,925 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 05:52:09,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 05:52:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-12-14 05:52:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:09,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 05:52:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:10,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:52:10,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,080 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 05:52:10,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 404 treesize of output 402 [2022-12-14 05:52:10,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,360 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 05:52:10,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 05:52:10,398 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 05:52:10,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 05:52:10,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:52:10,455 INFO L321 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2022-12-14 05:52:10,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2022-12-14 05:52:10,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:11,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1770#(and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= 3 |ULTIMATE.start_main_#t~mem9#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= 100000 |ULTIMATE.start_main_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:52:11,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:52:11,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:52:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20, 20] total 74 [2022-12-14 05:52:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946096230] [2022-12-14 05:52:11,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:52:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-14 05:52:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-14 05:52:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2732, Invalid=3430, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 05:52:11,084 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 states have internal predecessors, (83), 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) [2022-12-14 05:52:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:52:12,574 INFO L93 Difference]: Finished difference Result 385 states and 442 transitions. [2022-12-14 05:52:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-14 05:52:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 states have internal predecessors, (83), 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 56 [2022-12-14 05:52:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:52:12,576 INFO L225 Difference]: With dead ends: 385 [2022-12-14 05:52:12,576 INFO L226 Difference]: Without dead ends: 363 [2022-12-14 05:52:12,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 108 SyntacticMatches, 17 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4902, Invalid=7980, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 05:52:12,578 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1146 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:52:12,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 180 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:52:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-12-14 05:52:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 112. [2022-12-14 05:52:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 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) [2022-12-14 05:52:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2022-12-14 05:52:12,588 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 56 [2022-12-14 05:52:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:52:12,588 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2022-12-14 05:52:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 states have internal predecessors, (83), 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) [2022-12-14 05:52:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2022-12-14 05:52:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 05:52:12,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:52:12,590 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1] [2022-12-14 05:52:12,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:52:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:12,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:52:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:52:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2002387634, now seen corresponding path program 6 times [2022-12-14 05:52:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:52:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294276955] [2022-12-14 05:52:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:52:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:52:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2022-12-14 05:52:14,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:14,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294276955] [2022-12-14 05:52:14,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294276955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:52:14,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156258678] [2022-12-14 05:52:14,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:52:14,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:52:14,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:52:14,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab0719c-e6c7-4d13-8461-3fceb85781b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process