./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje --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 c28ec531d32a995842654b11d319d79f5f6e1bd0d3e33d9bd3cc173d0787760c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:26:43,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:26:43,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:26:43,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:26:43,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:26:43,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:26:43,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:26:43,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:26:43,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:26:43,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:26:43,677 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:26:43,677 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:26:43,677 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:26:43,678 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:26:43,678 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:26:43,679 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:26:43,679 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:26:43,679 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:26:43,680 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:26:43,680 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:26:43,681 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:26:43,681 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:26:43,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:26:43,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:26:43,683 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:26:43,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:26:43,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:26:43,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:26:43,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:26:43,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:26:43,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:26:43,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:26:43,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:26:43,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:26:43,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:26:43,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:26:43,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:26:43,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:26:43,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:26:43,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:26:43,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:26:43,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:26:43,690 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:26:43,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:26:43,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:26:43,691 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:26:43,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:26:43,691 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28ec531d32a995842654b11d319d79f5f6e1bd0d3e33d9bd3cc173d0787760c [2024-11-09 01:26:43,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:26:44,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:26:44,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:26:44,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:26:44,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:26:44,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-fpi/ifeqn3.c Unable to find full path for "g++" [2024-11-09 01:26:46,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:26:46,275 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:26:46,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/sv-benchmarks/c/array-fpi/ifeqn3.c [2024-11-09 01:26:46,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/data/6ec81b078/9348998da8474af3af2af70cfdcd6c53/FLAGca6828af0 [2024-11-09 01:26:46,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/data/6ec81b078/9348998da8474af3af2af70cfdcd6c53 [2024-11-09 01:26:46,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:26:46,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:26:46,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:26:46,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:26:46,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:26:46,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4197c397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46, skipping insertion in model container [2024-11-09 01:26:46,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:26:46,548 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_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/sv-benchmarks/c/array-fpi/ifeqn3.c[589,602] [2024-11-09 01:26:46,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:26:46,592 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:26:46,608 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_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/sv-benchmarks/c/array-fpi/ifeqn3.c[589,602] [2024-11-09 01:26:46,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:26:46,641 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:26:46,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46 WrapperNode [2024-11-09 01:26:46,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:26:46,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:26:46,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:26:46,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:26:46,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,680 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-09 01:26:46,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:26:46,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:26:46,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:26:46,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:26:46,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:26:46,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:26:46,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:26:46,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:26:46,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (1/1) ... [2024-11-09 01:26:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:26:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:46,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:26:46,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:26:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:26:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:26:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:26:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:26:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:26:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:26:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:26:46,889 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:26:46,891 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:26:47,188 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 01:26:47,188 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:26:47,302 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:26:47,303 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 01:26:47,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:26:47 BoogieIcfgContainer [2024-11-09 01:26:47,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:26:47,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:26:47,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:26:47,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:26:47,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:26:46" (1/3) ... [2024-11-09 01:26:47,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f6610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:26:47, skipping insertion in model container [2024-11-09 01:26:47,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:46" (2/3) ... [2024-11-09 01:26:47,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f6610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:26:47, skipping insertion in model container [2024-11-09 01:26:47,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:26:47" (3/3) ... [2024-11-09 01:26:47,318 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn3.c [2024-11-09 01:26:47,341 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:26:47,341 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:26:47,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:26:47,430 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;@43ac0c7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:26:47,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:26:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 01:26:47,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:47,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:47,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2036603696, now seen corresponding path program 1 times [2024-11-09 01:26:47,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345517129] [2024-11-09 01:26:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:47,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:47,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345517129] [2024-11-09 01:26:47,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345517129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:26:47,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:26:47,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:26:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32830844] [2024-11-09 01:26:47,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:26:47,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:26:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:26:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:26:47,823 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:47,909 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2024-11-09 01:26:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:26:47,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 01:26:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:47,920 INFO L225 Difference]: With dead ends: 32 [2024-11-09 01:26:47,921 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 01:26:47,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:26:47,928 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:47,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:26:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 01:26:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 01:26:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-09 01:26:47,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-11-09 01:26:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:47,965 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-09 01:26:47,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-09 01:26:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 01:26:47,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:47,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:47,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:26:47,995 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:47,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1356960374, now seen corresponding path program 1 times [2024-11-09 01:26:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:47,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100822543] [2024-11-09 01:26:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:26:48,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100822543] [2024-11-09 01:26:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100822543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:26:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:26:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:26:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297856864] [2024-11-09 01:26:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:26:48,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:26:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:26:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:26:48,223 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:48,308 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-09 01:26:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:26:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 01:26:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:48,310 INFO L225 Difference]: With dead ends: 31 [2024-11-09 01:26:48,310 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 01:26:48,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:26:48,312 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:48,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 8 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:26:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 01:26:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2024-11-09 01:26:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-09 01:26:48,323 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-11-09 01:26:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:48,325 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-09 01:26:48,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-09 01:26:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 01:26:48,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:48,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:48,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:26:48,327 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:48,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1963109269, now seen corresponding path program 1 times [2024-11-09 01:26:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:48,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022014292] [2024-11-09 01:26:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:48,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818252984] [2024-11-09 01:26:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:48,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:48,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:48,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:48,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:26:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:48,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 01:26:48,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:48,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 01:26:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:26:48,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:49,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:49,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2024-11-09 01:26:49,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:49,091 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:26:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:26:49,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022014292] [2024-11-09 01:26:49,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818252984] [2024-11-09 01:26:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818252984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147232190] [2024-11-09 01:26:49,152 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 01:26:49,153 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:49,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:49,161 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:49,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:50,426 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:50,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (<= 1 ~N~0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) 0) 1)) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:26:50,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:50,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:26:50,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-09 01:26:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867565527] [2024-11-09 01:26:50,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:50,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:26:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:26:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 01:26:50,728 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:50,943 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-09 01:26:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:26:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 01:26:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:50,946 INFO L225 Difference]: With dead ends: 39 [2024-11-09 01:26:50,946 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 01:26:50,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-09 01:26:50,948 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:50,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 53 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:26:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 01:26:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2024-11-09 01:26:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-09 01:26:50,960 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2024-11-09 01:26:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:50,961 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-09 01:26:50,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-09 01:26:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 01:26:50,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:50,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:50,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:26:51,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:51,167 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:51,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1389335264, now seen corresponding path program 2 times [2024-11-09 01:26:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681277935] [2024-11-09 01:26:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:51,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:51,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681277935] [2024-11-09 01:26:51,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681277935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:26:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012360027] [2024-11-09 01:26:51,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:26:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:51,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:51,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:26:51,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 01:26:51,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:26:51,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 01:26:51,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:51,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 44 [2024-11-09 01:26:51,715 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 [2024-11-09 01:26:51,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:26:51,799 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 5 treesize of output 3 [2024-11-09 01:26:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 01:26:51,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:52,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:52,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2024-11-09 01:26:52,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:52,164 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:26:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 01:26:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012360027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2038189926] [2024-11-09 01:26:52,264 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 01:26:52,264 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:52,264 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:52,265 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:52,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:53,148 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:53,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '430#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (<= 1 ~N~0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) 0) 1)) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:26:53,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:53,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:26:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-11-09 01:26:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252667855] [2024-11-09 01:26:53,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:53,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 01:26:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 01:26:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2024-11-09 01:26:53,494 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:54,070 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-09 01:26:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 01:26:54,070 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 01:26:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:54,071 INFO L225 Difference]: With dead ends: 83 [2024-11-09 01:26:54,071 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 01:26:54,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 01:26:54,073 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 120 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:54,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 49 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:26:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 01:26:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 26. [2024-11-09 01:26:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-09 01:26:54,081 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2024-11-09 01:26:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:54,081 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-09 01:26:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-09 01:26:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 01:26:54,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:54,082 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:54,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 01:26:54,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:54,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:54,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1942814171, now seen corresponding path program 3 times [2024-11-09 01:26:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467755907] [2024-11-09 01:26:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:54,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:54,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467755907] [2024-11-09 01:26:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467755907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:26:54,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755020524] [2024-11-09 01:26:54,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:26:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:54,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:54,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:26:54,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:26:54,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:26:54,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:26:54,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:54,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755020524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:54,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276592405] [2024-11-09 01:26:54,836 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 01:26:54,840 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:54,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:54,841 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:54,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:55,475 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:55,830 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '727#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (<= 1 ~N~0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) 0) 1)) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:26:55,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:55,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:26:55,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 01:26:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794915924] [2024-11-09 01:26:55,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:55,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 01:26:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 01:26:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-09 01:26:55,835 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:56,041 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-09 01:26:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 01:26:56,043 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 01:26:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:56,044 INFO L225 Difference]: With dead ends: 71 [2024-11-09 01:26:56,044 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 01:26:56,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-09 01:26:56,046 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 71 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:56,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 37 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:26:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 01:26:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2024-11-09 01:26:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-09 01:26:56,058 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2024-11-09 01:26:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:56,059 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-09 01:26:56,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:26:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-09 01:26:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 01:26:56,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:56,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:56,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 01:26:56,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:56,261 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:56,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 79460301, now seen corresponding path program 1 times [2024-11-09 01:26:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403162646] [2024-11-09 01:26:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876548711] [2024-11-09 01:26:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:56,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:56,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:56,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:26:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:56,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 01:26:56,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:56,611 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 [2024-11-09 01:26:56,647 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 11 treesize of output 7 [2024-11-09 01:26:56,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 01:26:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 01:26:56,842 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 01:26:56,843 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 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 01:26:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:57,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:57,741 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 7 treesize of output 3 [2024-11-09 01:26:58,044 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (and (not (= .cse1 0)) (forall ((v_DerPreprocessor_3 (Array Int Int))) (= 7 (select (store v_DerPreprocessor_3 (+ (* (mod .cse1 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (let ((.cse2 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select v_DerPreprocessor_3 (+ .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or (not .cse0) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2024-11-09 01:26:58,570 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (* .cse0 8))) (and (or (< 2147483647 .cse0) (forall ((v_DerPreprocessor_5 (Array Int Int))) (or (= 6 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_5))) (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_DerPreprocessor_5 (let ((.cse3 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse2 .cse3 (select v_DerPreprocessor_5 .cse3)))))))) (or (forall ((v_DerPreprocessor_5 (Array Int Int))) (or (not (= (let ((.cse5 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse2 .cse5 (select v_DerPreprocessor_5 .cse5))) v_DerPreprocessor_5)) (= 6 (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_5))) (store .cse6 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< .cse0 2147483648)) (or (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (forall ((v_DerPreprocessor_6 (Array Int Int))) (= (select (select (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_6))) (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 6)))))) is different from false [2024-11-09 01:26:58,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:58,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2024-11-09 01:26:58,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:58,706 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:26:58,854 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-09 01:26:58,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 307 treesize of output 307 [2024-11-09 01:26:58,868 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 189 treesize of output 185 [2024-11-09 01:26:58,908 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 24 treesize of output 20 [2024-11-09 01:26:58,926 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 86 treesize of output 82 [2024-11-09 01:26:58,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:26:58,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 88 [2024-11-09 01:26:58,983 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 26 treesize of output 22 [2024-11-09 01:26:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-09 01:26:59,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403162646] [2024-11-09 01:26:59,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876548711] [2024-11-09 01:26:59,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876548711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [672045449] [2024-11-09 01:26:59,029 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 01:26:59,030 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:59,030 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:59,030 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:59,031 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:59,773 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:00,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1027#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (exists ((|v_ULTIMATE.start_main_#t~mem12#1_5| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)) |v_ULTIMATE.start_main_#t~mem12#1_5|) (not (= |v_ULTIMATE.start_main_#t~mem12#1_5| (+ (* 3 |ULTIMATE.start_main_~i~0#1|) 1 (* 3 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|))))))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:27:00,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:00,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:27:00,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-09 01:27:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843520435] [2024-11-09 01:27:00,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:00,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 01:27:00,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:00,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 01:27:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=563, Unknown=2, NotChecked=98, Total=756 [2024-11-09 01:27:00,344 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:01,077 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2024-11-09 01:27:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 01:27:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 01:27:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:01,079 INFO L225 Difference]: With dead ends: 49 [2024-11-09 01:27:01,080 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 01:27:01,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=833, Unknown=2, NotChecked=122, Total=1122 [2024-11-09 01:27:01,081 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:01,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 64 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 197 Invalid, 0 Unknown, 62 Unchecked, 0.4s Time] [2024-11-09 01:27:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 01:27:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-11-09 01:27:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-09 01:27:01,087 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-11-09 01:27:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:01,088 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-09 01:27:01,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-09 01:27:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 01:27:01,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:01,089 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:01,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:01,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:01,293 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:27:01,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash -659909215, now seen corresponding path program 4 times [2024-11-09 01:27:01,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247572210] [2024-11-09 01:27:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:27:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180908012] [2024-11-09 01:27:01,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:27:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:01,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:01,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:27:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:01,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 01:27:01,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:01,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 01:27:01,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 01:27:01,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 01:27:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:27:01,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:02,004 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 5 treesize of output 3 [2024-11-09 01:27:02,288 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 5 treesize of output 3 [2024-11-09 01:27:02,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:27:02,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2024-11-09 01:27:02,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:27:02,480 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:27:02,570 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 134 treesize of output 128 [2024-11-09 01:27:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:27:02,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247572210] [2024-11-09 01:27:02,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:27:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180908012] [2024-11-09 01:27:02,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180908012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45511455] [2024-11-09 01:27:02,596 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 01:27:02,596 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:02,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:02,597 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:02,597 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:03,130 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:03,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1296#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (<= 1 ~N~0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) 0) 1)) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:27:03,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:03,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:27:03,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2024-11-09 01:27:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780434770] [2024-11-09 01:27:03,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:03,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 01:27:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 01:27:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-09 01:27:03,466 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:03,950 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2024-11-09 01:27:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 01:27:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 01:27:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:03,952 INFO L225 Difference]: With dead ends: 88 [2024-11-09 01:27:03,953 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 01:27:03,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-09 01:27:03,954 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:03,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 74 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 01:27:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 01:27:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 42. [2024-11-09 01:27:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 01:27:03,963 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 22 [2024-11-09 01:27:03,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:03,964 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 01:27:03,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 01:27:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 01:27:03,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:03,965 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:03,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:27:04,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:04,166 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:27:04,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1466747373, now seen corresponding path program 2 times [2024-11-09 01:27:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146815909] [2024-11-09 01:27:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 01:27:04,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146815909] [2024-11-09 01:27:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146815909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480157348] [2024-11-09 01:27:04,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:04,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:04,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:04,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:27:04,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 01:27:04,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:04,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:27:04,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 01:27:04,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 01:27:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480157348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:04,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [382378054] [2024-11-09 01:27:04,784 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 01:27:04,784 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:04,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:04,785 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:04,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:05,449 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:05,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1624#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (exists ((|v_ULTIMATE.start_main_#t~mem12#1_5| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)) |v_ULTIMATE.start_main_#t~mem12#1_5|) (not (= |v_ULTIMATE.start_main_#t~mem12#1_5| (+ (* 3 |ULTIMATE.start_main_~i~0#1|) 1 (* 3 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|))))))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:27:05,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:05,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 01:27:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191105818] [2024-11-09 01:27:05,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 01:27:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 01:27:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-09 01:27:05,828 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:06,121 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-09 01:27:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:27:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-09 01:27:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:06,122 INFO L225 Difference]: With dead ends: 62 [2024-11-09 01:27:06,122 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 01:27:06,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-11-09 01:27:06,124 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:06,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 47 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:27:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 01:27:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 34. [2024-11-09 01:27:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-09 01:27:06,142 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 24 [2024-11-09 01:27:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:06,143 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-09 01:27:06,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-09 01:27:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 01:27:06,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:06,144 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:06,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 01:27:06,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:06,345 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:27:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1189158904, now seen corresponding path program 3 times [2024-11-09 01:27:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647469416] [2024-11-09 01:27:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:27:06,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111472210] [2024-11-09 01:27:06,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:27:06,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:06,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:06,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:27:06,729 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:27:06,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:06,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 01:27:06,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:06,753 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 [2024-11-09 01:27:06,796 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 11 treesize of output 7 [2024-11-09 01:27:06,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 01:27:06,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2024-11-09 01:27:07,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2024-11-09 01:27:07,089 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 01:27:07,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 47 [2024-11-09 01:27:07,193 INFO L349 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2024-11-09 01:27:07,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 52 treesize of output 59 [2024-11-09 01:27:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:07,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:08,003 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 7 treesize of output 3 [2024-11-09 01:27:17,209 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse15 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (let ((.cse8 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse10 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse14 (* (mod .cse8 4294967296) 8)) (.cse9 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (+ (* 8 (mod .cse9 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse2 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (* .cse10 8)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (and (forall ((v_DerPreprocessor_27 (Array Int Int))) (= 7 (select (let ((.cse3 (select v_DerPreprocessor_27 (+ .cse6 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_27) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))))) (let ((.cse0 (store v_DerPreprocessor_27 .cse5 (+ .cse3 .cse4)))) (store .cse0 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse3 .cse4)))) .cse7))) (or (not (= .cse8 0)) (forall ((v_DerPreprocessor_26 (Array Int Int))) (= 7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_26) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_DerPreprocessor_26 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not (= .cse9 0))) (< .cse10 2147483648)) (or (< 2147483647 .cse10) (forall ((v_DerPreprocessor_27 (Array Int Int))) (= 7 (select (let ((.cse12 (select v_DerPreprocessor_27 (+ .cse6 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse13 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_27) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse11 (store v_DerPreprocessor_27 .cse5 (+ .cse12 .cse13)))) (store .cse11 .cse1 (+ .cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse13)))) .cse7)))))))) .cse15) (or (not .cse15) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2024-11-09 01:27:20,061 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 5 treesize of output 3 [2024-11-09 01:27:21,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:27:21,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 40 [2024-11-09 01:27:21,614 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (and (not (= .cse0 0)) (or (forall ((v_arrayElimArr_11 (Array Int Int))) (or (not (= (select v_arrayElimArr_11 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ 6 (select v_arrayElimArr_11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))))) (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_11))) (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 6))) (not .cse2)) (or .cse2 (let ((.cse7 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse9 (* .cse7 8))) (let ((.cse6 (+ (* (mod .cse0 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (forall ((v_DerPreprocessor_33 Int)) (= (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse4 .cse5 v_DerPreprocessor_33) .cse6 (+ v_DerPreprocessor_33 6))))) (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 6)) (< .cse7 2147483648)) (or (< 2147483647 .cse7) (forall ((v_DerPreprocessor_32 Int)) (= 6 (select (select (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse4 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|) v_DerPreprocessor_32) .cse6 (+ 6 (select .cse4 .cse5)))))) (store .cse8 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))))))))) is different from false [2024-11-09 01:27:21,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:27:21,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2024-11-09 01:27:22,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:27:22,043 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:27:22,877 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-09 01:27:22,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1347 treesize of output 1303 [2024-11-09 01:27:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 324 [2024-11-09 01:27:23,573 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 5 treesize of output 3 [2024-11-09 01:27:23,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-09 01:27:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2024-11-09 01:27:24,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647469416] [2024-11-09 01:27:24,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:27:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111472210] [2024-11-09 01:27:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111472210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129127889] [2024-11-09 01:27:24,007 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 01:27:24,008 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:24,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:24,008 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:24,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:24,741 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:29,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1946#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (exists ((|v_ULTIMATE.start_main_#t~mem12#1_5| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)) |v_ULTIMATE.start_main_#t~mem12#1_5|) (not (= |v_ULTIMATE.start_main_#t~mem12#1_5| (+ (* 3 |ULTIMATE.start_main_~i~0#1|) 1 (* 3 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|))))))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:27:29,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:29,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:27:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2024-11-09 01:27:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93759314] [2024-11-09 01:27:29,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:29,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 01:27:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 01:27:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=815, Unknown=3, NotChecked=118, Total=1056 [2024-11-09 01:27:29,714 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:49,184 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2024-11-09 01:27:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 01:27:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 01:27:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:49,187 INFO L225 Difference]: With dead ends: 171 [2024-11-09 01:27:49,187 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 01:27:49,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=413, Invalid=2454, Unknown=3, NotChecked=210, Total=3080 [2024-11-09 01:27:49,189 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:49,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 176 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 569 Invalid, 0 Unknown, 314 Unchecked, 8.2s Time] [2024-11-09 01:27:49,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 01:27:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 63. [2024-11-09 01:27:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-09 01:27:49,226 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 26 [2024-11-09 01:27:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:49,226 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-09 01:27:49,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-09 01:27:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 01:27:49,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:49,227 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:49,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:49,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:49,428 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:27:49,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1902568320, now seen corresponding path program 5 times [2024-11-09 01:27:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828904033] [2024-11-09 01:27:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:51,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828904033] [2024-11-09 01:27:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828904033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097251512] [2024-11-09 01:27:51,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:51,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:51,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:51,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:27:51,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 01:27:51,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:51,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 01:27:51,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:53,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 01:27:53,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:27:54,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 94 [2024-11-09 01:27:54,207 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-11-09 01:27:54,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 106 [2024-11-09 01:27:54,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 13 [2024-11-09 01:27:54,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:27:55,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 86 [2024-11-09 01:27:55,208 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-09 01:27:55,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 90 [2024-11-09 01:27:55,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:27:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 01:27:56,361 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-09 01:27:56,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 33 [2024-11-09 01:27:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:27:58,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:00,977 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 5 treesize of output 3 [2024-11-09 01:28:02,093 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 26 treesize of output 24 [2024-11-09 01:28:03,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:28:03,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2024-11-09 01:28:03,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:28:03,578 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:28:04,183 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 68 treesize of output 66 [2024-11-09 01:28:04,280 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 26 treesize of output 24 [2024-11-09 01:28:04,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 01:28:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:28:06,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097251512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:06,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702819505] [2024-11-09 01:28:06,194 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 01:28:06,194 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:28:06,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:28:06,195 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:28:06,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:28:06,790 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:28:12,522 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2504#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (<= 1 ~N~0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) 0) 1)) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:28:12,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:28:12,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:28:12,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2024-11-09 01:28:12,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019251966] [2024-11-09 01:28:12,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:12,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 01:28:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:28:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 01:28:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1478, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 01:28:12,525 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:28:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:25,671 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2024-11-09 01:28:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 01:28:25,672 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 01:28:25,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:25,672 INFO L225 Difference]: With dead ends: 141 [2024-11-09 01:28:25,672 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 01:28:25,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=855, Invalid=4115, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 01:28:25,674 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 494 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:25,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 168 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 01:28:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 01:28:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 74. [2024-11-09 01:28:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:28:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-09 01:28:25,702 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 28 [2024-11-09 01:28:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:25,702 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-09 01:28:25,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:28:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-09 01:28:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 01:28:25,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:25,704 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:25,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 01:28:25,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 01:28:25,905 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:28:25,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1477025519, now seen corresponding path program 4 times [2024-11-09 01:28:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:28:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324762095] [2024-11-09 01:28:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:28:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:28:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977409193] [2024-11-09 01:28:26,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:28:26,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:26,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:28:26,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:28:26,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c555bf-3fe1-4ac1-a9e0-5dddbeab96b0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:28:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:26,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 01:28:26,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:26,618 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 [2024-11-09 01:28:27,016 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 11 treesize of output 7 [2024-11-09 01:28:27,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 01:28:27,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-09 01:28:28,542 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 26 treesize of output 28 [2024-11-09 01:28:29,107 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 01:28:29,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 01:28:29,601 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 01:28:29,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 01:28:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:32,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:36,749 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 7 treesize of output 3 [2024-11-09 01:28:39,765 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 7 treesize of output 3 [2024-11-09 01:28:41,933 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse15 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse16 (* (mod .cse0 4294967296) 8)) (.cse14 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse2 (+ (* 8 (mod .cse14 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (not (= .cse0 0)) (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((v_DerPreprocessor_56 (Array Int Int))) (= 19 (select (let ((.cse3 (select v_DerPreprocessor_56 .cse8)) (.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse1 (store v_DerPreprocessor_56 .cse6 (+ .cse3 .cse4)))) (store .cse1 .cse2 (+ .cse3 .cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse9)))) (= 19 (select (let ((.cse13 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse11 (select .cse13 .cse8)) (.cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse10 (store .cse13 .cse6 (+ .cse11 .cse12)))) (store .cse10 .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse11 .cse12))))) .cse9)) (not (= .cse14 0)))))) is different from false [2024-11-09 01:29:12,883 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 13 treesize of output 1 [2024-11-09 01:29:15,522 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse36 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse45 (mod .cse36 4294967296)) (.cse46 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse23 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse44 (* .cse46 8)) (.cse43 (* .cse45 8))) (let ((.cse8 (< .cse45 2147483648)) (.cse7 (+ .cse43 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (+ .cse44 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse21 (< .cse46 2147483648)) (.cse0 (< 2147483647 .cse46)) (.cse9 (< 2147483647 .cse45)) (.cse15 (+ .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (+ .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse22 (* 8 .cse23))) (and (or (let ((.cse16 (+ 6 (select .cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse22))))) (and (or .cse0 (let ((.cse6 (store .cse14 .cse15 .cse16))) (and (or (forall ((v_ArrVal_512 (Array Int Int))) (or (= 18 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse3 (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse3 .cse4 (+ .cse1 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_ArrVal_512 (store .cse6 .cse7 (select v_ArrVal_512 .cse7)))))) .cse8) (or .cse9 (forall ((v_ArrVal_512 (Array Int Int))) (or (= 18 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse12 (store (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse10 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse10 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse12 .cse4 (+ .cse10 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_ArrVal_512 (store .cse6 .cse13 (select v_ArrVal_512 .cse13)))))))))) (or (forall ((v_ArrVal_512 (Array Int Int))) (or (not (= v_ArrVal_512 (store (store .cse14 .cse17 .cse16) .cse7 (select v_ArrVal_512 .cse7)))) (= 18 (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse20 (store (select .cse19 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~b~0#1.base| .cse20) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse20 .cse4 (+ .cse18 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))))) .cse8 .cse21))) (< 2147483647 .cse23)) (or (let ((.cse31 (+ (select .cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse22)) 6))) (and (or (let ((.cse32 (= .cse36 0))) (and (or (let ((.cse27 (store .cse14 .cse17 .cse31))) (and (or .cse9 (forall ((v_ArrVal_512 (Array Int Int))) (or (= 18 (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse26 (store (select .cse25 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse24 (select (select (store .cse25 |c_ULTIMATE.start_main_~b~0#1.base| .cse26) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse24 (select (select (store .cse25 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse26 .cse4 (+ .cse24 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_ArrVal_512 (store .cse27 .cse13 (select v_ArrVal_512 .cse13))))))) (or .cse8 (forall ((v_ArrVal_512 (Array Int Int))) (or (not (= v_ArrVal_512 (store .cse27 .cse7 (select v_ArrVal_512 .cse7)))) (= 18 (let ((.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse30 (store (select .cse29 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse28 (select (select (store .cse29 |c_ULTIMATE.start_main_~b~0#1.base| .cse30) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse28 (select (select (store .cse29 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse30 .cse4 (+ .cse28 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))))))) .cse32) (or (not .cse32) (= 18 (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)) (+ 6 (select .cse14 (+ (- 16) |c_ULTIMATE.start_main_~a~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.offset| 6)))) (let ((.cse35 (store (select .cse34 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse33 (select (select (store .cse34 |c_ULTIMATE.start_main_~b~0#1.base| .cse35) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse33 (select (select (store .cse34 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse35 .cse4 (+ .cse33 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))))) .cse21) (or .cse0 (and (or .cse9 (forall ((v_ArrVal_512 (Array Int Int))) (or (= 18 (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse39 (store (select .cse38 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~b~0#1.base| .cse39) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse39 .cse4 (+ .cse37 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_ArrVal_512 (store (store .cse14 .cse15 .cse31) .cse13 (select v_ArrVal_512 .cse13))))))) (or (forall ((v_ArrVal_512 (Array Int Int))) (= 18 (let ((.cse41 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_512))) (let ((.cse42 (store (select .cse41 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse40 (select (select (store .cse41 |c_ULTIMATE.start_main_~b~0#1.base| .cse42) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse40 (select (select (store .cse41 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse42 .cse4 (+ .cse40 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0))))))) (< .cse23 2147483648))))))) is different from false [2024-11-09 01:29:22,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:29:22,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2024-11-09 01:29:22,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:29:22,978 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-09 01:29:31,363 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-09 01:29:31,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 2289 treesize of output 2197 [2024-11-09 01:29:31,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 903 treesize of output 889 [2024-11-09 01:29:33,845 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 01:29:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 01:29:33,899 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 85 treesize of output 58 [2024-11-09 01:29:34,035 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:34,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 01:29:34,064 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 70 treesize of output 58 [2024-11-09 01:29:34,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2024-11-09 01:29:34,355 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 22 treesize of output 14 [2024-11-09 01:29:38,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2024-11-09 01:29:38,616 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:38,622 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:38,628 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:38,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:29:38,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 190 treesize of output 162 [2024-11-09 01:29:40,048 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:40,054 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 01:29:40,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2024-11-09 01:29:44,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 01:29:44,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 315 [2024-11-09 01:30:00,566 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 101 treesize of output 95 [2024-11-09 01:30:43,061 WARN L286 SmtUtils]: Spent 14.28s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 01:30:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2024-11-09 01:30:57,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:30:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324762095] [2024-11-09 01:30:57,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:30:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977409193] [2024-11-09 01:30:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977409193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:30:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [173644484] [2024-11-09 01:30:57,364 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 01:30:57,365 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:30:57,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:30:57,365 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:30:57,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:30:58,095 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:31:04,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3055#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (exists ((|v_ULTIMATE.start_main_#t~mem12#1_5| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)) |v_ULTIMATE.start_main_#t~mem12#1_5|) (not (= |v_ULTIMATE.start_main_#t~mem12#1_5| (+ (* 3 |ULTIMATE.start_main_~i~0#1|) 1 (* 3 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|))))))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 01:31:04,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:31:04,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:31:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-09 01:31:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329964139] [2024-11-09 01:31:04,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:31:04,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 01:31:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:31:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 01:31:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=872, Unknown=9, NotChecked=122, Total=1122 [2024-11-09 01:31:04,440 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:31:16,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 01:33:25,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15m for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 01:35:36,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19m for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 01:35:39,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 01:37:58,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31m for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 01:40:37,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65m for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]