./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array1_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array1_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --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 f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:49:44,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:49:44,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:49:44,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:49:44,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:49:44,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:49:44,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:49:44,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:49:44,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:49:44,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:49:44,175 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:49:44,177 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:49:44,178 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:49:44,178 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:49:44,179 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:49:44,179 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:49:44,179 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:49:44,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:49:44,180 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:49:44,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:49:44,180 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:49:44,180 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:49:44,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:49:44,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:49:44,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:49:44,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:49:44,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:49:44,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:49:44,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:49:44,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:49:44,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:49:44,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:49:44,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:49:44,185 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2024-11-14 05:49:44,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:49:44,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:49:44,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:49:44,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:49:44,612 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:49:44,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-patterns/array1_pattern.c Unable to find full path for "g++" [2024-11-14 05:49:47,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:49:47,288 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:49:47,289 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/sv-benchmarks/c/array-patterns/array1_pattern.c [2024-11-14 05:49:47,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/data/5b858ac08/be24d55c51e444afb962e39984c59025/FLAG4d3e34483 [2024-11-14 05:49:47,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/data/5b858ac08/be24d55c51e444afb962e39984c59025 [2024-11-14 05:49:47,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:49:47,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:49:47,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:47,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:49:47,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:49:47,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128ec261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47, skipping insertion in model container [2024-11-14 05:49:47,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:49:47,531 WARN L250 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_3d9cbde2-71cc-443d-8fa7-75ed39438b53/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2024-11-14 05:49:47,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:47,566 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:49:47,579 WARN L250 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_3d9cbde2-71cc-443d-8fa7-75ed39438b53/sv-benchmarks/c/array-patterns/array1_pattern.c[1307,1320] [2024-11-14 05:49:47,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:47,615 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:49:47,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47 WrapperNode [2024-11-14 05:49:47,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:47,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:49:47,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:49:47,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:49:47,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,663 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-14 05:49:47,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:49:47,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:49:47,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:49:47,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:49:47,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:49:47,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:49:47,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:49:47,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:49:47,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (1/1) ... [2024-11-14 05:49:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:49:47,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:47,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:49:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:49:47,929 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:49:47,931 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:49:48,180 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-14 05:49:48,183 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:49:48,234 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:49:48,234 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:49:48,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:49:48 BoogieIcfgContainer [2024-11-14 05:49:48,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:49:48,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:49:48,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:49:48,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:49:48,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:49:47" (1/3) ... [2024-11-14 05:49:48,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a3099c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:49:48, skipping insertion in model container [2024-11-14 05:49:48,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:47" (2/3) ... [2024-11-14 05:49:48,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a3099c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:49:48, skipping insertion in model container [2024-11-14 05:49:48,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:49:48" (3/3) ... [2024-11-14 05:49:48,248 INFO L112 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2024-11-14 05:49:48,269 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:49:48,270 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array1_pattern.c that has 2 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 05:49:48,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:49:48,355 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@195c5540, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:49:48,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:49:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:48,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:48,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:48,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:49:48,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 444577635, now seen corresponding path program 1 times [2024-11-14 05:49:48,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:48,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316574436] [2024-11-14 05:49:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:48,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:48,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316574436] [2024-11-14 05:49:48,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316574436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:49:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863529523] [2024-11-14 05:49:48,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:48,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:49:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:49:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:49:48,686 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:48,740 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-11-14 05:49:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:49:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 05:49:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:48,755 INFO L225 Difference]: With dead ends: 24 [2024-11-14 05:49:48,755 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 05:49:48,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:49:48,763 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:48,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:49:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 05:49:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 05:49:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-14 05:49:48,813 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2024-11-14 05:49:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:48,814 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-14 05:49:48,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:49:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-14 05:49:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 05:49:48,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:48,816 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:48,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:49:48,817 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:49:48,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1806753580, now seen corresponding path program 1 times [2024-11-14 05:49:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750209910] [2024-11-14 05:49:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:49:49,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750209910] [2024-11-14 05:49:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750209910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:49:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349085547] [2024-11-14 05:49:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:49,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:49:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:49:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:49:49,199 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:49,242 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-11-14 05:49:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:49:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-14 05:49:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:49,244 INFO L225 Difference]: With dead ends: 19 [2024-11-14 05:49:49,244 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 05:49:49,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:49:49,246 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:49,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:49:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 05:49:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 05:49:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-14 05:49:49,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2024-11-14 05:49:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-14 05:49:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-14 05:49:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:49:49,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:49,254 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:49,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:49:49,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:49:49,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 173741513, now seen corresponding path program 1 times [2024-11-14 05:49:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:49,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413376489] [2024-11-14 05:49:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:49:49,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:49,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413376489] [2024-11-14 05:49:49,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413376489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:49:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305608526] [2024-11-14 05:49:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:49,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:49:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:49:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:49,448 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:49,537 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-14 05:49:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-14 05:49:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:49,539 INFO L225 Difference]: With dead ends: 29 [2024-11-14 05:49:49,539 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 05:49:49,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:49,541 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:49,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:49:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 05:49:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 05:49:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-14 05:49:49,547 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2024-11-14 05:49:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:49,547 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-14 05:49:49,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:49:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-14 05:49:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:49:49,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:49,549 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:49,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:49:49,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:49:49,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash 65990061, now seen corresponding path program 1 times [2024-11-14 05:49:49,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:49:49,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917532249] [2024-11-14 05:49:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:49,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:49:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:49:49,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691643514] [2024-11-14 05:49:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:49,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:49,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:49,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:49,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:49:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:49,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 05:49:49,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:49,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:49:50,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-14 05:49:50,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 17 [2024-11-14 05:49:50,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 05:49:50,726 INFO L349 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2024-11-14 05:49:50,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 28 [2024-11-14 05:49:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:51,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:56,704 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse11 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse5 (* .cse11 4)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_4 Int)) (let ((.cse0 (+ .cse11 v_z_4))) (or (< 4294967295 .cse0) (forall ((v_y_4 Int)) (let ((.cse8 (* v_y_4 4294967296)) (.cse9 (* 4294967295 v_z_4))) (let ((.cse7 (+ .cse8 .cse9))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse7))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse4 (* v_z_4 4)) (.cse6 (* |c_ULTIMATE.start_main_~num~0#1| .cse7))) (or (= (+ .cse1 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 .cse5 (- 34359738368)) .cse6)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 0) (< .cse7 0) (= (+ .cse1 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse3 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 .cse5) .cse6)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 0) (< c_~ARR_SIZE~0 (+ .cse8 .cse9 1))))))))) (< v_z_4 0) (< .cse0 2147483648)))) (forall ((v_z_4 Int)) (or (< (+ .cse11 v_z_4) 6442450944) (forall ((v_y_4 Int)) (let ((.cse18 (* v_y_4 4294967296)) (.cse19 (* 4294967295 v_z_4))) (let ((.cse17 (+ .cse18 .cse19))) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse17))))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse15 (* v_z_4 4)) (.cse16 (* |c_ULTIMATE.start_main_~num~0#1| .cse17))) (or (= (+ .cse12 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse14 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse15 .cse5 (- 34359738368)) .cse16)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 0) (< .cse17 0) (= (+ .cse12 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse14 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse15 .cse5) .cse16)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 0) (< c_~ARR_SIZE~0 (+ .cse18 .cse19 1))))))))) (< 4294967295 v_z_4))) (forall ((v_z_1 Int)) (let ((.cse25 (+ .cse11 v_z_1))) (or (forall ((v_y_1 Int)) (let ((.cse20 (* 4294967295 v_z_1)) (.cse21 (* v_y_1 4294967296))) (let ((.cse24 (+ .cse20 .cse21))) (or (< c_~ARR_SIZE~0 (+ .cse20 .cse21 1)) (= (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse24 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse23 (store (select .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* v_z_1 4) (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) (* .cse24 |c_ULTIMATE.start_main_~num~0#1|)))) (+ (select (select (store .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse23) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse23 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) 0) (< .cse24 0))))) (< 6442450943 .cse25) (< .cse25 4294967296) (< 4294967295 v_z_1)))) (forall ((v_z_1 Int)) (or (< 2147483647 (+ .cse11 v_z_1)) (< v_z_1 0) (forall ((v_y_1 Int)) (let ((.cse26 (* 4294967295 v_z_1)) (.cse27 (* v_y_1 4294967296))) (let ((.cse28 (+ .cse26 .cse27))) (let ((.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse28 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse30 (select .cse29 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse31 (* v_z_1 4)) (.cse32 (* .cse28 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse26 .cse27 1)) (< .cse28 0) (= (+ (select (select (store .cse29 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse30 (+ .cse31 (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) .cse32)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|) 0) (= (let ((.cse33 (store .cse30 (+ .cse31 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) .cse32))) (+ (select .cse33 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse29 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse33) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0))))))))) (forall ((v_z_1 Int)) (let ((.cse34 (+ .cse11 v_z_1))) (or (< 6442450943 .cse34) (< .cse34 4294967296) (< 4294967295 v_z_1) (forall ((v_y_1 Int)) (let ((.cse39 (* 4294967295 v_z_1)) (.cse40 (* v_y_1 4294967296))) (let ((.cse42 (+ .cse39 .cse40))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse42 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse35 (select .cse36 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse37 (* v_z_1 4)) (.cse38 (* .cse42 |c_ULTIMATE.start_main_~num~0#1|))) (or (= (+ (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse36 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse35 (+ .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) .cse38)) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 0) (< c_~ARR_SIZE~0 (+ .cse39 .cse40 1)) (= (let ((.cse41 (store .cse35 (+ .cse37 (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) .cse38))) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse41) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse41 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0) (< .cse42 0)))))))))) (forall ((v_z_4 Int)) (let ((.cse43 (+ .cse11 v_z_4))) (or (< 4294967295 .cse43) (< v_z_4 0) (< .cse43 2147483648) (forall ((v_y_4 Int)) (let ((.cse47 (* v_y_4 4294967296)) (.cse48 (* 4294967295 v_z_4))) (let ((.cse44 (+ .cse47 .cse48))) (or (< .cse44 0) (= (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse44))))) (let ((.cse45 (select .cse46 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse45 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse46 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse45 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_4 4) .cse5) (* |c_ULTIMATE.start_main_~num~0#1| .cse44))) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< c_~ARR_SIZE~0 (+ .cse47 .cse48 1))))))))) (forall ((v_z_4 Int)) (or (< (+ .cse11 v_z_4) 6442450944) (< 4294967295 v_z_4) (forall ((v_y_4 Int)) (let ((.cse52 (* v_y_4 4294967296)) (.cse53 (* 4294967295 v_z_4))) (let ((.cse51 (+ .cse52 .cse53))) (or (= (let ((.cse50 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse51))))) (let ((.cse49 (select .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse50 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse49 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_4 4) .cse5 (- 34359738368)) (* |c_ULTIMATE.start_main_~num~0#1| .cse51))) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< .cse51 0) (< c_~ARR_SIZE~0 (+ .cse52 .cse53 1)))))))) (forall ((v_z_1 Int)) (or (< 2147483647 (+ .cse11 v_z_1)) (< v_z_1 0) (forall ((v_y_1 Int)) (let ((.cse54 (* 4294967295 v_z_1)) (.cse55 (* v_y_1 4294967296))) (let ((.cse56 (+ .cse54 .cse55))) (or (< c_~ARR_SIZE~0 (+ .cse54 .cse55 1)) (< .cse56 0) (= (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse56 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse57 (store (select .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* v_z_1 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) (* .cse56 |c_ULTIMATE.start_main_~num~0#1|)))) (+ (select .cse57 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse57) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0)))))))))) is different from true [2024-11-14 05:49:56,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:49:56,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917532249] [2024-11-14 05:49:56,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:49:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691643514] [2024-11-14 05:49:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691643514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:49:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [558122744] [2024-11-14 05:49:56,746 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:49:56,746 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:49:56,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:49:56,756 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:49:56,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:49:57,619 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:49:57,621 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:49:59,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '302#(and (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= 1 ~ARR_SIZE~0))' at error location [2024-11-14 05:49:59,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:49:59,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:49:59,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-14 05:49:59,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570683993] [2024-11-14 05:49:59,381 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:49:59,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:49:59,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:49:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:49:59,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=698, Unknown=6, NotChecked=54, Total=870 [2024-11-14 05:49:59,384 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:00,293 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-14 05:50:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:50:00,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-14 05:50:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:00,295 INFO L225 Difference]: With dead ends: 39 [2024-11-14 05:50:00,295 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 05:50:00,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=206, Invalid=1198, Unknown=6, NotChecked=72, Total=1482 [2024-11-14 05:50:00,297 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:00,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 55 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:50:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 05:50:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2024-11-14 05:50:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:50:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-14 05:50:00,309 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2024-11-14 05:50:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:00,309 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-14 05:50:00,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-14 05:50:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 05:50:00,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:00,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:00,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:00,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:00,514 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:00,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2044647272, now seen corresponding path program 2 times [2024-11-14 05:50:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351927708] [2024-11-14 05:50:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:00,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351927708] [2024-11-14 05:50:00,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351927708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476339282] [2024-11-14 05:50:00,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:00,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:00,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:00,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:00,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:50:00,816 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:50:00,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:00,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:50:00,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:00,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476339282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:01,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1923234594] [2024-11-14 05:50:01,003 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:01,006 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:01,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:01,007 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:01,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:01,616 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:01,619 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:02,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '555#(and (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= 1 ~ARR_SIZE~0))' at error location [2024-11-14 05:50:02,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:02,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-14 05:50:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148422532] [2024-11-14 05:50:02,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:02,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:50:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:50:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=426, Unknown=5, NotChecked=0, Total=506 [2024-11-14 05:50:02,810 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:02,955 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-11-14 05:50:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:50:02,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-11-14 05:50:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:02,957 INFO L225 Difference]: With dead ends: 37 [2024-11-14 05:50:02,957 INFO L226 Difference]: Without dead ends: 24 [2024-11-14 05:50:02,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=464, Unknown=5, NotChecked=0, Total=552 [2024-11-14 05:50:02,958 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:02,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:50:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-14 05:50:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-11-14 05:50:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-14 05:50:02,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2024-11-14 05:50:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-14 05:50:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-14 05:50:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 05:50:02,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:02,967 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:02,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:50:03,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:03,168 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:03,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1020662345, now seen corresponding path program 3 times [2024-11-14 05:50:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863340236] [2024-11-14 05:50:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:03,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863340236] [2024-11-14 05:50:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863340236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527073656] [2024-11-14 05:50:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:50:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:03,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:03,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:50:03,533 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:50:03,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:03,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:50:03,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:03,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527073656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439000955] [2024-11-14 05:50:03,736 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:03,736 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:03,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:03,739 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:03,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:04,547 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:04,549 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:05,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '658#true' at error location [2024-11-14 05:50:05,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:05,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-14 05:50:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530146240] [2024-11-14 05:50:05,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:50:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:50:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=354, Unknown=3, NotChecked=0, Total=420 [2024-11-14 05:50:05,715 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:05,918 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2024-11-14 05:50:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:50:05,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-11-14 05:50:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:05,920 INFO L225 Difference]: With dead ends: 24 [2024-11-14 05:50:05,920 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 05:50:05,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=427, Unknown=3, NotChecked=0, Total=506 [2024-11-14 05:50:05,922 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:05,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:50:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 05:50:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 05:50:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-14 05:50:05,929 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2024-11-14 05:50:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:05,929 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-14 05:50:05,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-14 05:50:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:50:05,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:05,930 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:05,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:06,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:06,131 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:06,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1574717004, now seen corresponding path program 4 times [2024-11-14 05:50:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590291207] [2024-11-14 05:50:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:06,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616031474] [2024-11-14 05:50:06,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:50:06,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:06,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:06,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:50:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:06,305 WARN L253 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-14 05:50:06,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:06,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:50:06,458 INFO L378 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 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-14 05:50:06,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2024-11-14 05:50:07,373 INFO L349 Elim1Store]: treesize reduction 180, result has 23.4 percent of original size [2024-11-14 05:50:07,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 158 treesize of output 173 [2024-11-14 05:50:07,542 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2024-11-14 05:50:07,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 158 [2024-11-14 05:50:07,678 INFO L349 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2024-11-14 05:50:07,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 129 [2024-11-14 05:50:07,935 INFO L349 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2024-11-14 05:50:07,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 48 [2024-11-14 05:50:08,297 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-14 05:50:08,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 124 [2024-11-14 05:50:08,919 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2024-11-14 05:50:08,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 44 [2024-11-14 05:50:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:08,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:15,153 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse7 (* .cse0 4)) (.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_8 Int)) (or (< v_z_8 0) (< 2147483647 (+ .cse0 v_z_8)) (forall ((v_y_8 Int)) (let ((.cse12 (* v_y_8 4294967296)) (.cse13 (* 4294967295 v_z_8))) (let ((.cse10 (+ .cse12 .cse13))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_8) (* 17179869180 v_z_8)) (* .cse10 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse8 (* v_z_8 4)) (.cse9 (* .cse10 |c_ULTIMATE.start_main_~num~0#1|))) (or (= (let ((.cse1 (store .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse8) .cse9))) (let ((.cse3 (select (store .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse1 .cse2) |c_ULTIMATE.start_main_~sum~0#1| (select .cse3 .cse4) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< .cse10 0) (= (let ((.cse11 (select (store .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse6 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse8) .cse9)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse11 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse11 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 .cse2))) 0) (< c_~ARR_SIZE~0 (+ .cse12 .cse13 1)))))))))) (forall ((v_z_5 Int)) (let ((.cse15 (+ .cse0 v_z_5))) (or (< .cse15 2147483648) (forall ((v_y_5 Int)) (let ((.cse16 (* 4294967295 v_z_5)) (.cse17 (* v_y_5 4294967296))) (let ((.cse18 (+ .cse16 .cse17))) (or (< c_~ARR_SIZE~0 (+ .cse16 .cse17 1)) (< .cse18 0) (= (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse18 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse20 (select .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse19 (select (store .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse20 (+ (- 17179869184) (* v_z_5 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7) (* .cse18 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse19 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse20 .cse2) |c_ULTIMATE.start_main_~sum~0#1| (select .cse19 .cse4) (select .cse20 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0))))) (< 4294967295 .cse15) (< v_z_5 0)))) (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (< (+ .cse0 v_z_5) 6442450944) (forall ((v_y_5 Int)) (let ((.cse22 (* 4294967295 v_z_5)) (.cse23 (* v_y_5 4294967296))) (let ((.cse24 (+ .cse22 .cse23))) (or (< c_~ARR_SIZE~0 (+ .cse22 .cse23 1)) (< .cse24 0) (= (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse24 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse25 (select .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse26 (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse25 (+ (* v_z_5 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)) (* .cse24 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse25 .cse2) |c_ULTIMATE.start_main_~sum~0#1| (select .cse26 .cse4) (select .cse26 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0))))))) (forall ((v_z_5 Int)) (let ((.cse28 (+ .cse0 v_z_5))) (or (< .cse28 2147483648) (forall ((v_y_5 Int)) (let ((.cse29 (* 4294967295 v_z_5)) (.cse30 (* v_y_5 4294967296))) (let ((.cse31 (+ .cse29 .cse30))) (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse31 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse36 (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse33 (select .cse36 .cse2)) (.cse34 (select .cse36 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse37 (* v_z_5 4)) (.cse38 (* .cse31 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse29 .cse30 1)) (< .cse31 0) (= (let ((.cse32 (select (store .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse36 (+ (- 17179869184) .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7) .cse38)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse32 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse33 |c_ULTIMATE.start_main_~sum~0#1| (select .cse32 .cse4) .cse34)) 0) (= (let ((.cse39 (select (store .cse35 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse36 (+ .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)) .cse38)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse33 |c_ULTIMATE.start_main_~sum~0#1| (select .cse39 .cse4) (select .cse39 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse34)) 0)))))))) (< 4294967295 .cse28) (< v_z_5 0)))) (forall ((v_z_8 Int)) (let ((.cse40 (+ .cse0 v_z_8))) (or (< 4294967295 v_z_8) (< 6442450943 .cse40) (< .cse40 4294967296) (forall ((v_y_8 Int)) (let ((.cse49 (* v_y_8 4294967296)) (.cse50 (* 4294967295 v_z_8))) (let ((.cse41 (+ .cse49 .cse50))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_8) (* 17179869180 v_z_8)) (* .cse41 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse42 (select .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse45 (* v_z_8 4)) (.cse46 (* .cse41 |c_ULTIMATE.start_main_~num~0#1|))) (or (< .cse41 0) (= 0 (let ((.cse43 (select (store .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse42 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse45) .cse46)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse42 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse43 .cse4) (select .cse42 .cse2) (select .cse43 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) (= (let ((.cse48 (store .cse42 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse45) .cse46))) (let ((.cse47 (select (store .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse48) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse47 .cse4) (select .cse48 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse47 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse48 .cse2)))) 0) (< c_~ARR_SIZE~0 (+ .cse49 .cse50 1))))))))))) (forall ((v_z_8 Int)) (let ((.cse51 (+ .cse0 v_z_8))) (or (< 4294967295 v_z_8) (< 6442450943 .cse51) (< .cse51 4294967296) (forall ((v_y_8 Int)) (let ((.cse56 (* v_y_8 4294967296)) (.cse57 (* 4294967295 v_z_8))) (let ((.cse52 (+ .cse56 .cse57))) (or (< .cse52 0) (= (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_8) (* 17179869180 v_z_8)) (* .cse52 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse54 (store (select .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (* v_z_8 4)) (* .cse52 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse53 (select (store .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse54) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse53 .cse4) (select .cse54 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse53 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse54 .cse2))))) 0) (< c_~ARR_SIZE~0 (+ .cse56 .cse57 1))))))))) (forall ((v_z_5 Int)) (or (< 4294967295 v_z_5) (forall ((v_y_5 Int)) (let ((.cse58 (* 4294967295 v_z_5)) (.cse59 (* v_y_5 4294967296))) (let ((.cse60 (+ .cse58 .cse59))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* .cse60 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse65 (select .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse62 (select .cse65 .cse2)) (.cse63 (select .cse65 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse66 (* v_z_5 4)) (.cse67 (* .cse60 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse58 .cse59 1)) (< .cse60 0) (= (let ((.cse61 (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse65 (+ (- 17179869184) .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7) .cse67)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse61 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse62 |c_ULTIMATE.start_main_~sum~0#1| (select .cse61 .cse4) .cse63)) 0) (= (let ((.cse68 (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse65 (+ .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)) .cse67)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse62 |c_ULTIMATE.start_main_~sum~0#1| (select .cse68 .cse4) (select .cse68 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse63)) 0)))))))) (< (+ .cse0 v_z_5) 6442450944))) (forall ((v_z_8 Int)) (or (< v_z_8 0) (< 2147483647 (+ .cse0 v_z_8)) (forall ((v_y_8 Int)) (let ((.cse73 (* v_y_8 4294967296)) (.cse74 (* 4294967295 v_z_8))) (let ((.cse72 (+ .cse73 .cse74))) (or (= (let ((.cse71 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_8) (* 17179869180 v_z_8)) (* .cse72 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse69 (store (select .cse71 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (* v_z_8 4)) (* .cse72 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse70 (select (store .cse71 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse69) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse69 .cse2) |c_ULTIMATE.start_main_~sum~0#1| (select .cse70 .cse4) (select .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse70 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))) 0) (< .cse72 0) (< c_~ARR_SIZE~0 (+ .cse73 .cse74 1))))))))))) is different from true [2024-11-14 05:50:15,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590291207] [2024-11-14 05:50:15,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616031474] [2024-11-14 05:50:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616031474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916220701] [2024-11-14 05:50:15,161 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:15,162 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:15,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:15,162 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:15,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:15,607 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:15,608 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:17,057 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '969#(<= 1 ~ARR_SIZE~0)' at error location [2024-11-14 05:50:17,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:17,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-14 05:50:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974274438] [2024-11-14 05:50:17,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:17,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:50:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:50:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=963, Unknown=5, NotChecked=64, Total=1190 [2024-11-14 05:50:17,060 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:17,725 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-14 05:50:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:50:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-14 05:50:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:17,726 INFO L225 Difference]: With dead ends: 39 [2024-11-14 05:50:17,726 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 05:50:17,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=224, Invalid=1335, Unknown=5, NotChecked=76, Total=1640 [2024-11-14 05:50:17,728 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:17,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 58 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:50:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 05:50:17,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2024-11-14 05:50:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:50:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-14 05:50:17,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2024-11-14 05:50:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:17,742 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-14 05:50:17,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-14 05:50:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:50:17,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:17,743 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:17,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:50:17,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:50:17,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:17,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1570542249, now seen corresponding path program 5 times [2024-11-14 05:50:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352246039] [2024-11-14 05:50:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:18,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352246039] [2024-11-14 05:50:18,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352246039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:18,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630592565] [2024-11-14 05:50:18,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:18,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:18,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:18,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:18,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:50:18,287 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:50:18,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:18,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:50:18,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:18,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630592565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219421717] [2024-11-14 05:50:18,485 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:18,485 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:18,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:18,485 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:18,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:18,919 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:18,921 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:19,965 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1239#(<= 1 ~ARR_SIZE~0)' at error location [2024-11-14 05:50:19,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:19,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-14 05:50:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536708315] [2024-11-14 05:50:19,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:19,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:50:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:50:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=554, Unknown=2, NotChecked=0, Total=650 [2024-11-14 05:50:19,967 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:20,114 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-14 05:50:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:50:20,115 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-14 05:50:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:20,116 INFO L225 Difference]: With dead ends: 50 [2024-11-14 05:50:20,116 INFO L226 Difference]: Without dead ends: 42 [2024-11-14 05:50:20,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=113, Invalid=641, Unknown=2, NotChecked=0, Total=756 [2024-11-14 05:50:20,117 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:20,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:50:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-14 05:50:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-11-14 05:50:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:50:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-14 05:50:20,137 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2024-11-14 05:50:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:20,139 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-14 05:50:20,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-14 05:50:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:50:20,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:20,141 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:20,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:50:20,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 05:50:20,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:20,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash -108219416, now seen corresponding path program 6 times [2024-11-14 05:50:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792577864] [2024-11-14 05:50:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:20,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792577864] [2024-11-14 05:50:20,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792577864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044388999] [2024-11-14 05:50:20,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:50:20,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:20,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:20,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:20,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:50:20,631 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:50:20,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:20,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:50:20,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:20,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044388999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [851801125] [2024-11-14 05:50:20,857 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:20,857 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:20,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:20,857 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:20,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:21,233 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:21,234 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:22,081 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1532#(and (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= 1 ~ARR_SIZE~0))' at error location [2024-11-14 05:50:22,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:22,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:22,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-14 05:50:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507568583] [2024-11-14 05:50:22,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:50:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:50:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=550, Unknown=5, NotChecked=0, Total=650 [2024-11-14 05:50:22,083 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:22,257 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-11-14 05:50:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:50:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-14 05:50:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:22,259 INFO L225 Difference]: With dead ends: 45 [2024-11-14 05:50:22,259 INFO L226 Difference]: Without dead ends: 42 [2024-11-14 05:50:22,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=688, Unknown=5, NotChecked=0, Total=812 [2024-11-14 05:50:22,260 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:22,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:50:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-14 05:50:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-11-14 05:50:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:50:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-14 05:50:22,278 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 21 [2024-11-14 05:50:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:22,278 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-14 05:50:22,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-14 05:50:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:50:22,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:22,279 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:22,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:50:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 05:50:22,479 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:22,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 939120781, now seen corresponding path program 7 times [2024-11-14 05:50:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827005091] [2024-11-14 05:50:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:22,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833769945] [2024-11-14 05:50:22,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:50:22,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:22,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:22,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:50:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:22,670 WARN L253 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-14 05:50:22,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:22,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:50:22,793 INFO L378 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 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-14 05:50:22,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2024-11-14 05:50:22,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2024-11-14 05:50:23,901 INFO L349 Elim1Store]: treesize reduction 264, result has 25.0 percent of original size [2024-11-14 05:50:23,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 186 treesize of output 225 [2024-11-14 05:50:24,033 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2024-11-14 05:50:24,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 190 [2024-11-14 05:50:24,165 INFO L349 Elim1Store]: treesize reduction 99, result has 1.0 percent of original size [2024-11-14 05:50:24,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 137 [2024-11-14 05:50:24,364 INFO L349 Elim1Store]: treesize reduction 70, result has 37.5 percent of original size [2024-11-14 05:50:24,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 68 [2024-11-14 05:50:24,868 INFO L349 Elim1Store]: treesize reduction 64, result has 36.0 percent of original size [2024-11-14 05:50:24,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 172 [2024-11-14 05:50:26,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 61 [2024-11-14 05:50:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:26,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:32,636 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse13 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse8 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (.cse7 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (.cse10 (* .cse13 4)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_15 Int)) (let ((.cse0 (+ .cse13 v_z_15))) (or (< 4294967295 v_z_15) (< .cse0 4294967296) (forall ((v_y_15 Int)) (let ((.cse1 (* v_y_15 4294967296)) (.cse2 (* v_z_15 4294967295))) (let ((.cse11 (+ .cse1 .cse2))) (or (< c_~ARR_SIZE~0 (+ .cse1 .cse2 1)) (= (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ (* 17179869180 v_z_15) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_15)) (* .cse11 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse6 (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) (* v_z_15 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) (* .cse11 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse3 (select (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse6) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse3 .cse4) (select .cse3 .cse5) (select .cse6 .cse7) (select .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 .cse8) (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0) (< .cse11 0))))) (< 6442450943 .cse0)))) (forall ((v_z_12 Int)) (or (< (+ .cse13 v_z_12) 6442450944) (< 4294967295 v_z_12) (forall ((v_y_12 Int)) (let ((.cse18 (* v_y_12 4294967296)) (.cse19 (* v_z_12 4294967295))) (let ((.cse14 (+ .cse18 .cse19))) (or (< .cse14 0) (= (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)) (* .cse14 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse16 (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse15 (select (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse16 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 (- 34359738368) (* v_z_12 4)) (* .cse14 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse15 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse16 .cse8) (select .cse15 .cse5) (select .cse16 .cse7) (select .cse15 .cse4) (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0) (< c_~ARR_SIZE~0 (+ .cse18 .cse19 1)))))))) (forall ((v_z_12 Int)) (or (forall ((v_y_12 Int)) (let ((.cse30 (* v_y_12 4294967296)) (.cse31 (* v_z_12 4294967295))) (let ((.cse28 (+ .cse30 .cse31))) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)) (* .cse28 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse25 (select .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse21 (select .cse25 .cse8)) (.cse22 (select .cse25 .cse7)) (.cse23 (select .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse26 (* v_z_12 4)) (.cse27 (* .cse28 |c_ULTIMATE.start_main_~num~0#1|))) (or (= (let ((.cse20 (select (store .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse25 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 .cse26) .cse27)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse20 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse20 .cse5) .cse21 .cse22 .cse23 (select .cse20 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0) (< .cse28 0) (= (let ((.cse29 (select (store .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse25 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 (- 34359738368) .cse26) .cse27)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse29 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| .cse21 (select .cse29 .cse5) .cse22 (select .cse29 .cse4) .cse23)) 0) (< c_~ARR_SIZE~0 (+ .cse30 .cse31 1))))))))) (< (+ .cse13 v_z_12) 6442450944) (< 4294967295 v_z_12))) (forall ((v_z_15 Int)) (or (< v_z_15 0) (< 2147483647 (+ .cse13 v_z_15)) (forall ((v_y_15 Int)) (let ((.cse39 (* v_y_15 4294967296)) (.cse40 (* v_z_15 4294967295))) (let ((.cse41 (+ .cse39 .cse40))) (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ (* 17179869180 v_z_15) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_15)) (* .cse41 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse35 (select .cse34 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse36 (* v_z_15 4)) (.cse37 (* .cse41 |c_ULTIMATE.start_main_~num~0#1|))) (or (= (let ((.cse33 (store .cse35 (+ .cse36 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) .cse37))) (let ((.cse32 (select (store .cse34 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse33) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse32 .cse4) (select .cse33 .cse8) (select .cse32 .cse5) (select .cse33 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse32 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse33 .cse7)))) 0) (= (let ((.cse38 (select (store .cse34 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse35 (+ (- 17179869184) .cse36 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) .cse37)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse38 .cse4) (select .cse38 .cse5) (select .cse35 .cse8) (select .cse38 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse35 .cse7) (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0) (< c_~ARR_SIZE~0 (+ .cse39 .cse40 1)) (< .cse41 0))))))))) (forall ((v_z_12 Int)) (let ((.cse54 (+ .cse13 v_z_12))) (or (forall ((v_y_12 Int)) (let ((.cse52 (* v_y_12 4294967296)) (.cse53 (* v_z_12 4294967295))) (let ((.cse50 (+ .cse52 .cse53))) (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)) (* .cse50 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse47 (select .cse46 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse43 (select .cse47 .cse8)) (.cse44 (select .cse47 .cse7)) (.cse45 (select .cse47 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse48 (* v_z_12 4)) (.cse49 (* .cse50 |c_ULTIMATE.start_main_~num~0#1|))) (or (= (let ((.cse42 (select (store .cse46 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse47 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 .cse48) .cse49)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse42 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse42 .cse5) .cse43 .cse44 .cse45 (select .cse42 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0) (< .cse50 0) (= (let ((.cse51 (select (store .cse46 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse47 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 (- 34359738368) .cse48) .cse49)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse51 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| .cse43 (select .cse51 .cse5) .cse44 (select .cse51 .cse4) .cse45)) 0) (< c_~ARR_SIZE~0 (+ .cse52 .cse53 1))))))))) (< 4294967295 .cse54) (< v_z_12 0) (< .cse54 2147483648)))) (forall ((v_z_12 Int)) (let ((.cse55 (+ .cse13 v_z_12))) (or (< 4294967295 .cse55) (< v_z_12 0) (< .cse55 2147483648) (forall ((v_y_12 Int)) (let ((.cse60 (* v_y_12 4294967296)) (.cse61 (* v_z_12 4294967295))) (let ((.cse59 (+ .cse60 .cse61))) (or (= (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)) (* .cse59 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse56 (select (store .cse58 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse57 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10 (* v_z_12 4)) (* .cse59 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse56 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse56 .cse5) (select .cse57 .cse8) (select .cse57 .cse7) (select .cse57 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse56 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))) 0) (< .cse59 0) (< c_~ARR_SIZE~0 (+ .cse60 .cse61 1))))))))) (forall ((v_z_15 Int)) (let ((.cse62 (+ .cse13 v_z_15))) (or (< 4294967295 v_z_15) (< .cse62 4294967296) (forall ((v_y_15 Int)) (let ((.cse63 (* v_y_15 4294967296)) (.cse64 (* v_z_15 4294967295))) (let ((.cse71 (+ .cse63 .cse64))) (let ((.cse67 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ (* 17179869180 v_z_15) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_15)) (* .cse71 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse68 (select .cse67 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse69 (* v_z_15 4)) (.cse70 (* .cse71 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse63 .cse64 1)) (= (let ((.cse66 (store .cse68 (+ (- 17179869184) .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) .cse70))) (let ((.cse65 (select (store .cse67 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse66) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse65 .cse4) (select .cse65 .cse5) (select .cse66 .cse7) (select .cse65 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse66 .cse8) (select .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) 0) (< .cse71 0) (= (let ((.cse72 (select (store .cse67 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse68 (+ .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) .cse70)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse72 .cse4) (select .cse72 .cse5) (select .cse72 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse68 .cse8) (select .cse68 .cse7) (select .cse68 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))))) (< 6442450943 .cse62)))) (forall ((v_z_15 Int)) (or (< v_z_15 0) (forall ((v_y_15 Int)) (let ((.cse77 (* v_y_15 4294967296)) (.cse78 (* v_z_15 4294967295))) (let ((.cse76 (+ .cse77 .cse78))) (or (= (let ((.cse75 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse12 (+ (* 17179869180 v_z_15) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_15)) (* .cse76 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse74 (store (select .cse75 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* v_z_15 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse10) (* .cse76 |c_ULTIMATE.start_main_~num~0#1|)))) (let ((.cse73 (select (store .cse75 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse74) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse73 .cse4) (select .cse74 .cse8) (select .cse73 .cse5) (select .cse74 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse73 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse74 .cse7))))) 0) (< c_~ARR_SIZE~0 (+ .cse77 .cse78 1)) (< .cse76 0))))) (< 2147483647 (+ .cse13 v_z_15))))))) is different from true [2024-11-14 05:50:32,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827005091] [2024-11-14 05:50:32,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:50:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833769945] [2024-11-14 05:50:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833769945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548478338] [2024-11-14 05:50:32,642 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:32,642 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:32,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:32,643 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:32,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:33,133 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:33,134 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:34,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1805#(<= 1 ~ARR_SIZE~0)' at error location [2024-11-14 05:50:34,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:34,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:50:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-14 05:50:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235283950] [2024-11-14 05:50:34,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:34,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 05:50:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 05:50:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1158, Unknown=8, NotChecked=70, Total=1406 [2024-11-14 05:50:34,752 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:35,880 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2024-11-14 05:50:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 05:50:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-14 05:50:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:35,882 INFO L225 Difference]: With dead ends: 58 [2024-11-14 05:50:35,882 INFO L226 Difference]: Without dead ends: 55 [2024-11-14 05:50:35,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=245, Invalid=1643, Unknown=8, NotChecked=84, Total=1980 [2024-11-14 05:50:35,883 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:35,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 99 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:50:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-14 05:50:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2024-11-14 05:50:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:50:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-14 05:50:35,918 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2024-11-14 05:50:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:35,919 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-14 05:50:35,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:50:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-14 05:50:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:50:35,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:35,921 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:35,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 05:50:36,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 05:50:36,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:36,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -953071480, now seen corresponding path program 8 times [2024-11-14 05:50:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841581369] [2024-11-14 05:50:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:36,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841581369] [2024-11-14 05:50:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841581369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733685236] [2024-11-14 05:50:36,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:36,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:36,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:36,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:36,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:50:36,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:50:36,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:36,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:50:36,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:36,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733685236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1687515627] [2024-11-14 05:50:36,641 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:36,641 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:36,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:36,641 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:36,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:37,060 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:37,062 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:37,975 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2007#true' at error location [2024-11-14 05:50:37,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:37,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:37,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-14 05:50:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826216515] [2024-11-14 05:50:37,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:37,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:50:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:50:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=598, Unknown=2, NotChecked=0, Total=702 [2024-11-14 05:50:37,977 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:38,158 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2024-11-14 05:50:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:50:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-14 05:50:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:38,159 INFO L225 Difference]: With dead ends: 70 [2024-11-14 05:50:38,159 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 05:50:38,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=733, Unknown=2, NotChecked=0, Total=870 [2024-11-14 05:50:38,160 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:38,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:50:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 05:50:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-11-14 05:50:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:50:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-14 05:50:38,193 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 23 [2024-11-14 05:50:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:38,194 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-14 05:50:38,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-14 05:50:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:50:38,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:38,194 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:38,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:50:38,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 05:50:38,395 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:38,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1455075543, now seen corresponding path program 9 times [2024-11-14 05:50:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:38,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358039897] [2024-11-14 05:50:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:38,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:38,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:50:38,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358039897] [2024-11-14 05:50:38,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358039897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:50:38,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728291954] [2024-11-14 05:50:38,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:50:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:38,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:38,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:50:38,712 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:50:38,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:38,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:50:38,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:38,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728291954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950945942] [2024-11-14 05:50:38,982 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:50:38,982 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:50:38,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:50:38,982 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:50:38,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:50:39,309 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:50:39,310 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:50:40,407 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2526#(<= 1 ~ARR_SIZE~0)' at error location [2024-11-14 05:50:40,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:50:40,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:50:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-14 05:50:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841351394] [2024-11-14 05:50:40,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:40,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:50:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:50:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:50:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=677, Unknown=10, NotChecked=0, Total=812 [2024-11-14 05:50:40,409 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:40,674 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-14 05:50:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:50:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-14 05:50:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:40,677 INFO L225 Difference]: With dead ends: 64 [2024-11-14 05:50:40,677 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 05:50:40,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=875, Unknown=10, NotChecked=0, Total=1056 [2024-11-14 05:50:40,678 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:40,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:50:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 05:50:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-11-14 05:50:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:50:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-14 05:50:40,702 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 23 [2024-11-14 05:50:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:40,702 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-14 05:50:40,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:50:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-14 05:50:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:50:40,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:40,703 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:40,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:50:40,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:50:40,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:40,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2136253804, now seen corresponding path program 10 times [2024-11-14 05:50:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:50:40,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777526107] [2024-11-14 05:50:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:50:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:50:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236547958] [2024-11-14 05:50:41,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:50:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:41,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:41,025 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:50:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:41,209 WARN L253 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-14 05:50:41,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:41,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:50:41,315 INFO L378 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 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-14 05:50:41,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2024-11-14 05:50:41,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2024-11-14 05:50:41,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 75 [2024-11-14 05:50:42,836 INFO L349 Elim1Store]: treesize reduction 402, result has 24.0 percent of original size [2024-11-14 05:50:42,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 8 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 76 case distinctions, treesize of input 208 treesize of output 273 [2024-11-14 05:50:42,949 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2024-11-14 05:50:42,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 218 [2024-11-14 05:50:43,117 INFO L349 Elim1Store]: treesize reduction 108, result has 0.9 percent of original size [2024-11-14 05:50:43,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 125 [2024-11-14 05:50:43,546 INFO L349 Elim1Store]: treesize reduction 58, result has 44.8 percent of original size [2024-11-14 05:50:43,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 70 [2024-11-14 05:50:43,726 INFO L349 Elim1Store]: treesize reduction 50, result has 43.8 percent of original size [2024-11-14 05:50:43,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 150 [2024-11-14 05:50:49,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:50:49,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 494 treesize of output 482 [2024-11-14 05:50:51,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:51,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:51,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:51,972 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:51,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,176 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,364 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,415 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,830 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:55,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:55,907 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:55,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:50:56,158 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:50:56,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2024-11-14 05:50:56,440 INFO L349 Elim1Store]: treesize reduction 17, result has 56.4 percent of original size [2024-11-14 05:50:56,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 37 [2024-11-14 05:50:56,478 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 05:50:56,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 1 [2024-11-14 05:50:56,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:50:56,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 200 treesize of output 336 [2024-11-14 05:50:57,457 INFO L349 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2024-11-14 05:50:57,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 177 treesize of output 1 [2024-11-14 05:50:57,500 INFO L349 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2024-11-14 05:50:57,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 172 treesize of output 1 [2024-11-14 05:50:57,530 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 05:50:57,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 1 [2024-11-14 05:50:57,548 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 05:50:57,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 1 [2024-11-14 05:50:57,571 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 05:50:57,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 1 [2024-11-14 05:50:57,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 76 [2024-11-14 05:50:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:50:57,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:03,900 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse19 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (.cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (.cse7 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (.cse8 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse12 (* .cse19 4)) (.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_16 Int)) (let ((.cse0 (+ .cse19 v_z_16))) (or (< .cse0 4294967296) (< 4294967295 v_z_16) (forall ((v_y_16 Int)) (let ((.cse15 (* v_z_16 4294967295)) (.cse16 (* v_y_16 4294967296))) (let ((.cse14 (+ .cse15 .cse16))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ (* 17179869184 v_y_16) (* 17179869180 v_z_16) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse14))))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse11 (* v_z_16 4)) (.cse13 (* |c_ULTIMATE.start_main_~num~0#1| .cse14))) (or (= (let ((.cse1 (store .cse10 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse11 .cse12) .cse13))) (let ((.cse2 (select (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 .cse3) (select .cse1 .cse4) (select .cse2 .cse5) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 .cse6) (select .cse1 .cse7) (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 .cse8)))) 0) (< .cse14 0) (< c_~ARR_SIZE~0 (+ .cse15 .cse16 1)) (= (let ((.cse17 (select (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse11 .cse12) .cse13)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse10 .cse7) (select .cse17 .cse6) (select .cse17 .cse3) (select .cse10 .cse8) |c_ULTIMATE.start_main_~sum~0#1| (select .cse17 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse17 .cse5) (select .cse10 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse10 .cse4))) 0))))))) (< 6442450943 .cse0)))) (forall ((v_z_18 Int)) (or (< (+ .cse19 v_z_18) 6442450944) (forall ((v_y_18 Int)) (let ((.cse20 (* v_y_18 4294967296)) (.cse21 (* v_z_18 4294967295))) (let ((.cse32 (+ .cse20 .cse21))) (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_18) (* 17179869184 v_y_18)) (* .cse32 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse22 (select .cse28 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse23 (select .cse28 .cse8)) (.cse25 (select .cse28 .cse4)) (.cse26 (select .cse28 .cse7)) (.cse29 (* v_z_18 4)) (.cse30 (* .cse32 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse20 .cse21 1)) (= (let ((.cse24 (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse28 (+ (- 17179869184) .cse29 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12) .cse30)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse22 .cse23 |c_ULTIMATE.start_main_~sum~0#1| (select .cse24 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse25 .cse26 (select .cse24 .cse5) (select .cse24 .cse3) (select .cse24 .cse6))) 0) (= (let ((.cse31 (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse28 (+ .cse29 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12 (- 34359738368)) .cse30)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse22 .cse23 |c_ULTIMATE.start_main_~sum~0#1| (select .cse31 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse31 .cse6) .cse25 .cse26 (select .cse31 .cse3) (select .cse31 .cse5))) 0) (< .cse32 0)))))))) (< 4294967295 v_z_18))) (forall ((v_z_18 Int)) (or (< (+ .cse19 v_z_18) 6442450944) (< 4294967295 v_z_18) (forall ((v_y_18 Int)) (let ((.cse33 (* v_y_18 4294967296)) (.cse34 (* v_z_18 4294967295))) (let ((.cse38 (+ .cse33 .cse34))) (or (< c_~ARR_SIZE~0 (+ .cse33 .cse34 1)) (= (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_18) (* 17179869184 v_y_18)) (* .cse38 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse35 (select .cse37 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse36 (select (store .cse37 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse35 (+ (* v_z_18 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12 (- 34359738368)) (* .cse38 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse35 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse35 .cse8) |c_ULTIMATE.start_main_~sum~0#1| (select .cse36 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse36 .cse6) (select .cse35 .cse4) (select .cse35 .cse7) (select .cse36 .cse3) (select .cse36 .cse5))))) 0) (< .cse38 0))))))) (forall ((v_z_18 Int)) (let ((.cse39 (+ .cse19 v_z_18))) (or (< 4294967295 .cse39) (forall ((v_y_18 Int)) (let ((.cse40 (* v_y_18 4294967296)) (.cse41 (* v_z_18 4294967295))) (let ((.cse52 (+ .cse40 .cse41))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_18) (* 17179869184 v_y_18)) (* .cse52 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse48 (select .cse47 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse42 (select .cse48 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (.cse43 (select .cse48 .cse8)) (.cse45 (select .cse48 .cse4)) (.cse46 (select .cse48 .cse7)) (.cse49 (* v_z_18 4)) (.cse50 (* .cse52 |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse40 .cse41 1)) (= (let ((.cse44 (select (store .cse47 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse48 (+ (- 17179869184) .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12) .cse50)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse42 .cse43 |c_ULTIMATE.start_main_~sum~0#1| (select .cse44 |c_ULTIMATE.start_main_~#array1~0#1.offset|) .cse45 .cse46 (select .cse44 .cse5) (select .cse44 .cse3) (select .cse44 .cse6))) 0) (= (let ((.cse51 (select (store .cse47 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse48 (+ .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12 (- 34359738368)) .cse50)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ .cse42 .cse43 |c_ULTIMATE.start_main_~sum~0#1| (select .cse51 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse51 .cse6) .cse45 .cse46 (select .cse51 .cse3) (select .cse51 .cse5))) 0) (< .cse52 0)))))))) (< v_z_18 0) (< .cse39 2147483648)))) (forall ((v_z_16 Int)) (or (< 2147483647 (+ .cse19 v_z_16)) (< v_z_16 0) (forall ((v_y_16 Int)) (let ((.cse57 (* v_z_16 4294967295)) (.cse58 (* v_y_16 4294967296))) (let ((.cse56 (+ .cse57 .cse58))) (or (= (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ (* 17179869184 v_y_16) (* 17179869180 v_z_16) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse56))))) (let ((.cse53 (store (select .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_16 4) .cse12) (* |c_ULTIMATE.start_main_~num~0#1| .cse56)))) (let ((.cse54 (select (store .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse53) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse53 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse54 .cse6) (select .cse54 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse54 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse54 .cse5) (select .cse53 .cse4) (select .cse53 .cse7) (select .cse53 .cse8))))) 0) (< .cse56 0) (< c_~ARR_SIZE~0 (+ .cse57 .cse58 1)))))))) (forall ((v_z_18 Int)) (let ((.cse59 (+ .cse19 v_z_18))) (or (< 4294967295 .cse59) (< v_z_18 0) (forall ((v_y_18 Int)) (let ((.cse60 (* v_y_18 4294967296)) (.cse61 (* v_z_18 4294967295))) (let ((.cse65 (+ .cse60 .cse61))) (or (< c_~ARR_SIZE~0 (+ .cse60 .cse61 1)) (= (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_18) (* 17179869184 v_y_18)) (* .cse65 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) (let ((.cse62 (select .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (let ((.cse63 (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse62 (+ (- 17179869184) (* v_z_18 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12) (* .cse65 |c_ULTIMATE.start_main_~num~0#1|))) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse62 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse62 .cse8) |c_ULTIMATE.start_main_~sum~0#1| (select .cse63 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse62 .cse4) (select .cse62 .cse7) (select .cse63 .cse5) (select .cse63 .cse3) (select .cse63 .cse6))))) 0) (< .cse65 0))))) (< .cse59 2147483648)))) (forall ((v_z_16 Int)) (or (forall ((v_y_16 Int)) (let ((.cse73 (* v_z_16 4294967295)) (.cse74 (* v_y_16 4294967296))) (let ((.cse72 (+ .cse73 .cse74))) (let ((.cse68 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ (* 17179869184 v_y_16) (* 17179869180 v_z_16) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse72))))) (let ((.cse69 (select .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse70 (* v_z_16 4)) (.cse71 (* |c_ULTIMATE.start_main_~num~0#1| .cse72))) (or (= (let ((.cse66 (store .cse69 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse70 .cse12) .cse71))) (let ((.cse67 (select (store .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse66) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse67 .cse6) (select .cse67 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse67 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse67 .cse5) (select .cse66 .cse4) (select .cse66 .cse7) (select .cse66 .cse8)))) 0) (< .cse72 0) (< c_~ARR_SIZE~0 (+ .cse73 .cse74 1)) (= (let ((.cse75 (select (store .cse68 |c_ULTIMATE.start_main_~#array2~0#1.base| (store .cse69 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse70 .cse12) .cse71)) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse75 .cse3) (select .cse69 .cse7) (select .cse75 .cse5) (select .cse69 .cse8) |c_ULTIMATE.start_main_~sum~0#1| (select .cse75 .cse6) (select .cse69 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse75 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse69 .cse4))) 0))))))) (< 2147483647 (+ .cse19 v_z_16)) (< v_z_16 0))) (forall ((v_z_16 Int)) (let ((.cse76 (+ .cse19 v_z_16))) (or (< .cse76 4294967296) (< 4294967295 v_z_16) (< 6442450943 .cse76) (forall ((v_y_16 Int)) (let ((.cse81 (* v_z_16 4294967295)) (.cse82 (* v_y_16 4294967296))) (let ((.cse80 (+ .cse81 .cse82))) (or (= (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse18 (+ (* 17179869184 v_y_16) (* 17179869180 v_z_16) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| .cse80))))) (let ((.cse77 (store (select .cse79 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_16 4) .cse12) (* |c_ULTIMATE.start_main_~num~0#1| .cse80)))) (let ((.cse78 (select (store .cse79 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse77) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse77 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse78 .cse3) (select .cse77 .cse4) (select .cse78 .cse5) |c_ULTIMATE.start_main_~sum~0#1| (select .cse78 .cse6) (select .cse77 .cse7) (select .cse78 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse77 .cse8))))) 0) (< .cse80 0) (< c_~ARR_SIZE~0 (+ .cse81 .cse82 1)))))))))))) is different from true [2024-11-14 05:51:03,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:51:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777526107] [2024-11-14 05:51:03,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:51:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236547958] [2024-11-14 05:51:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236547958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650289380] [2024-11-14 05:51:03,905 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 05:51:03,905 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:51:03,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:51:03,905 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:51:03,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:51:04,179 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 05:51:04,180 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:51:05,989 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2873#(<= 1 ~ARR_SIZE~0)' at error location [2024-11-14 05:51:05,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:51:05,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:51:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-14 05:51:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665198082] [2024-11-14 05:51:05,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:05,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 05:51:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:51:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 05:51:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1374, Unknown=8, NotChecked=76, Total=1640 [2024-11-14 05:51:05,991 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:09,190 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2024-11-14 05:51:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:51:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-14 05:51:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:09,192 INFO L225 Difference]: With dead ends: 76 [2024-11-14 05:51:09,192 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 05:51:09,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=266, Invalid=1986, Unknown=8, NotChecked=92, Total=2352 [2024-11-14 05:51:09,193 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:09,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 117 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:51:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 05:51:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2024-11-14 05:51:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:51:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-11-14 05:51:09,226 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 24 [2024-11-14 05:51:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:09,226 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-11-14 05:51:09,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:51:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-11-14 05:51:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:51:09,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:09,228 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:09,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:09,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 05:51:09,428 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:51:09,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash -386137674, now seen corresponding path program 1 times [2024-11-14 05:51:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903302541] [2024-11-14 05:51:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:51:09,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356717425] [2024-11-14 05:51:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:09,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:09,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:09,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d9cbde2-71cc-443d-8fa7-75ed39438b53/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:51:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:09,743 WARN L253 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-14 05:51:09,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:09,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 05:51:09,853 INFO L378 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 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-14 05:51:09,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2024-11-14 05:51:10,648 INFO L349 Elim1Store]: treesize reduction 202, result has 22.0 percent of original size [2024-11-14 05:51:10,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 152 treesize of output 165 [2024-11-14 05:51:10,808 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2024-11-14 05:51:10,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 150 [2024-11-14 05:51:10,897 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2024-11-14 05:51:10,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 109 [2024-11-14 05:51:10,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:51:10,955 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:51:10,997 INFO L349 Elim1Store]: treesize reduction 46, result has 31.3 percent of original size [2024-11-14 05:51:10,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 30 [2024-11-14 05:51:11,140 INFO L349 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2024-11-14 05:51:11,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2024-11-14 05:51:15,717 INFO L349 Elim1Store]: treesize reduction 804, result has 20.3 percent of original size [2024-11-14 05:51:15,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 15 new quantified variables, introduced 102 case distinctions, treesize of input 454 treesize of output 571 [2024-11-14 05:51:15,894 INFO L224 Elim1Store]: Index analysis took 142 ms [2024-11-14 05:51:18,316 INFO L349 Elim1Store]: treesize reduction 768, result has 21.1 percent of original size [2024-11-14 05:51:18,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 102 case distinctions, treesize of input 324 treesize of output 481 [2024-11-14 05:54:20,740 WARN L286 SmtUtils]: Spent 29.63s on a formula simplification. DAG size of input: 747 DAG size of output: 770 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:54:32,262 WARN L286 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 739 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:55:00,958 WARN L286 SmtUtils]: Spent 28.69s on a formula simplification. DAG size of input: 740 DAG size of output: 891 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:55:18,407 WARN L286 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 621 DAG size of output: 622 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:55:29,929 WARN L286 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 585 DAG size of output: 583 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:56:16,615 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 983 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:57:42,105 WARN L286 SmtUtils]: Spent 17.22s on a formula simplification. DAG size of input: 737 DAG size of output: 748 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:57:53,228 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 714 DAG size of output: 711 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:59:02,069 WARN L286 SmtUtils]: Spent 7.42s on a formula simplification that was a NOOP. DAG size: 1100 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 06:01:46,448 WARN L286 SmtUtils]: Spent 20.08s on a formula simplification. DAG size of input: 738 DAG size of output: 855 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 06:02:04,685 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 725 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 06:03:22,623 WARN L286 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 721 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)