./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/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 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:54:25,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:54:25,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:54:25,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:54:25,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:54:25,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:54:25,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:54:25,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:54:25,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:54:25,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:54:25,240 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:54:25,241 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:54:25,241 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:54:25,242 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:54:25,242 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:54:25,243 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:54:25,247 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:54:25,247 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:54:25,247 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:54:25,248 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:54:25,248 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:54:25,253 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:54:25,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:54:25,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:54:25,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:54:25,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:54:25,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:54:25,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:54:25,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:54:25,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:54:25,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:54:25,257 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:54:25,257 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:54:25,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:54:25,258 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:54:25,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:54:25,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:54:25,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:54:25,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:25,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:54:25,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:54:25,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:54:25,261 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:54:25,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:54:25,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:54:25,262 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:54:25,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:54:25,263 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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 [2024-11-09 04:54:25,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:54:25,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:54:25,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:54:25,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:54:25,684 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:54:25,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-fpi/ifeqn5.c Unable to find full path for "g++" [2024-11-09 04:54:28,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:54:28,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:54:28,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c [2024-11-09 04:54:28,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data/bed722b17/c6eaea315d0845aba3b2e27b2ffb23a6/FLAG4eb4f3796 [2024-11-09 04:54:28,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data/bed722b17/c6eaea315d0845aba3b2e27b2ffb23a6 [2024-11-09 04:54:28,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:54:28,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:54:28,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:28,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:54:28,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:54:28,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:28" (1/1) ... [2024-11-09 04:54:28,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414b1bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:28, skipping insertion in model container [2024-11-09 04:54:28,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:28" (1/1) ... [2024-11-09 04:54:28,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:54:29,142 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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2024-11-09 04:54:29,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:29,187 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:54:29,200 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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2024-11-09 04:54:29,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:29,237 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:54:29,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29 WrapperNode [2024-11-09 04:54:29,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:29,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:29,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:54:29,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:54:29,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,300 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-09 04:54:29,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:29,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:54:29,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:54:29,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:54:29,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:54:29,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:54:29,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:54:29,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:54:29,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (1/1) ... [2024-11-09 04:54:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:29,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:54:29,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:54:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:54:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:54:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:54:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:54:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:54:29,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:54:29,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:54:29,582 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:54:29,585 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:54:29,965 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 04:54:29,966 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:54:30,079 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:54:30,079 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:54:30,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:30 BoogieIcfgContainer [2024-11-09 04:54:30,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:54:30,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:54:30,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:54:30,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:54:30,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:54:28" (1/3) ... [2024-11-09 04:54:30,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5157d11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:30, skipping insertion in model container [2024-11-09 04:54:30,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:29" (2/3) ... [2024-11-09 04:54:30,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5157d11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:30, skipping insertion in model container [2024-11-09 04:54:30,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:30" (3/3) ... [2024-11-09 04:54:30,126 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn5.c [2024-11-09 04:54:30,145 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:54:30,146 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:54:30,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:54:30,236 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;@6d5df56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:54:30,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:54:30,241 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 04:54:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:54:30,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:30,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:30,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:30,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2036603696, now seen corresponding path program 1 times [2024-11-09 04:54:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811290560] [2024-11-09 04:54:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:30,678 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 04:54:30,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811290560] [2024-11-09 04:54:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811290560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:30,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368739260] [2024-11-09 04:54:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:30,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:30,722 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 04:54:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:30,834 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2024-11-09 04:54:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:30,838 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 04:54:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:30,849 INFO L225 Difference]: With dead ends: 32 [2024-11-09 04:54:30,850 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 04:54:30,855 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 04:54:30,861 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 04:54:30,863 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 04:54:30,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 04:54:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 04:54:30,905 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 04:54:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-09 04:54:30,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-11-09 04:54:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:30,909 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-09 04:54:30,910 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 04:54:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-09 04:54:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 04:54:30,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:30,914 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:30,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:54:30,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:30,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1356960374, now seen corresponding path program 1 times [2024-11-09 04:54:30,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994747893] [2024-11-09 04:54:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:31,168 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 04:54:31,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994747893] [2024-11-09 04:54:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994747893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:31,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:31,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:54:31,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869038990] [2024-11-09 04:54:31,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:31,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:54:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:31,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:54:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:31,175 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 04:54:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:31,274 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-09 04:54:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:54:31,275 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 04:54:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:31,276 INFO L225 Difference]: With dead ends: 31 [2024-11-09 04:54:31,276 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 04:54:31,277 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 04:54:31,279 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 04:54:31,280 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 04:54:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 04:54:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2024-11-09 04:54:31,286 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 04:54:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-09 04:54:31,287 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-11-09 04:54:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:31,288 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-09 04:54:31,288 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 04:54:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-09 04:54:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:54:31,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:31,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:31,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:54:31,290 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:31,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1963109269, now seen corresponding path program 1 times [2024-11-09 04:54:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623581465] [2024-11-09 04:54:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:54:31,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131588318] [2024-11-09 04:54:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:31,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:31,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:31,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:54:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:31,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 04:54:31,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:31,732 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 04:54:31,869 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 04:54:31,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:32,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:32,313 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 04:54:32,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:32,350 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 04:54:32,408 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 04:54:32,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623581465] [2024-11-09 04:54:32,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:54:32,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131588318] [2024-11-09 04:54:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131588318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:32,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [670986130] [2024-11-09 04:54:32,453 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:54:32,453 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:32,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:32,468 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:32,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:34,233 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:34,628 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 04:54:34,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:34,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:54:34,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-09 04:54:34,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384061806] [2024-11-09 04:54:34,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:34,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:54:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:54:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:54:34,636 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 04:54:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:34,910 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-09 04:54:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:54:34,914 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 04:54:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:34,915 INFO L225 Difference]: With dead ends: 39 [2024-11-09 04:54:34,916 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 04:54:34,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:54:34,920 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 04:54:34,921 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 04:54:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 04:54:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2024-11-09 04:54:34,933 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 04:54:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-09 04:54:34,935 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2024-11-09 04:54:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:34,936 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-09 04:54:34,936 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 04:54:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-09 04:54:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:54:34,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:34,941 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:34,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:35,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:35,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:35,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1389335264, now seen corresponding path program 2 times [2024-11-09 04:54:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:35,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973287723] [2024-11-09 04:54:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:35,580 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 04:54:35,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973287723] [2024-11-09 04:54:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973287723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787000772] [2024-11-09 04:54:35,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:35,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:35,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:54:35,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:54:35,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:35,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:54:35,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:35,874 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 04:54:35,894 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 04:54:35,986 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 16 treesize of output 5 [2024-11-09 04:54:36,174 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 04:54:36,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:36,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:36,457 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 04:54:36,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:36,476 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 04:54:36,507 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 6 treesize of output 4 [2024-11-09 04:54:36,512 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 7 treesize of output 3 [2024-11-09 04:54:36,635 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 04:54:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787000772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932630343] [2024-11-09 04:54:36,640 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:54:36,642 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:36,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:36,643 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:36,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:37,787 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:38,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '432#(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 04:54:38,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:38,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:54:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-09 04:54:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592205995] [2024-11-09 04:54:38,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:38,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 04:54:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 04:54:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:54:38,344 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 04:54:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:39,404 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-11-09 04:54:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 04:54:39,405 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 04:54:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:39,407 INFO L225 Difference]: With dead ends: 75 [2024-11-09 04:54:39,407 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 04:54:39,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 04:54:39,410 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 114 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:39,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 42 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:54:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 04:54:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20. [2024-11-09 04:54:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 04:54:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-09 04:54:39,418 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-09 04:54:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:39,418 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-09 04:54:39,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 04:54:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-09 04:54:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 04:54:39,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:39,420 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:39,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:54:39,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:39,622 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:39,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1351821338, now seen corresponding path program 3 times [2024-11-09 04:54:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185714289] [2024-11-09 04:54:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:54:39,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712025630] [2024-11-09 04:54:39,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:54:39,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:39,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:39,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:54:39,992 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:54:39,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:39,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:54:39,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:40,026 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 04:54:40,059 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 04:54:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:54:40,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:40,505 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 04:54:40,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:40,679 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 04:54:40,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:40,699 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 04:54:40,778 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 46 treesize of output 42 [2024-11-09 04:54:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 04:54:40,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185714289] [2024-11-09 04:54:40,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:54:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712025630] [2024-11-09 04:54:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712025630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178770551] [2024-11-09 04:54:40,794 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:54:40,795 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:40,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:40,795 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:40,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:41,838 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:42,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '705#(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 04:54:42,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:42,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:54:42,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-09 04:54:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561067223] [2024-11-09 04:54:42,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:42,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:54:42,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:54:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:54:42,184 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 04:54:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:42,457 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2024-11-09 04:54:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:54:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 18 [2024-11-09 04:54:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:42,461 INFO L225 Difference]: With dead ends: 56 [2024-11-09 04:54:42,464 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 04:54:42,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:54:42,466 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:42,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 04:54:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2024-11-09 04:54:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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 04:54:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 04:54:42,483 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2024-11-09 04:54:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:42,483 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 04:54:42,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 04:54:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 04:54:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:54:42,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:42,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:42,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:42,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:42,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:42,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:42,689 INFO L85 PathProgramCache]: Analyzing trace with hash 79460301, now seen corresponding path program 1 times [2024-11-09 04:54:42,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426902097] [2024-11-09 04:54:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:42,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:54:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747865071] [2024-11-09 04:54:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:42,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:42,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:54:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:43,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 04:54:43,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:43,200 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 04:54:43,229 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 04:54:43,275 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 27 treesize of output 11 [2024-11-09 04:54:43,347 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 04:54:43,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2024-11-09 04:54:43,721 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 04:54:43,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:44,743 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 04:54:45,010 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 (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int) (v_DerPreprocessor_10 (Array Int Int))) (= (select (store v_DerPreprocessor_10 (+ |ULTIMATE.start_main_~b~0#1.offset| (* (mod .cse1 4294967296) 8)) (let ((.cse2 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (+ (select v_DerPreprocessor_10 (+ |ULTIMATE.start_main_~b~0#1.offset| .cse2)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |ULTIMATE.start_main_~b~0#1.offset| 8)) 11)) (not (= .cse1 0))))) (or (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int)) (= (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|) |ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 10)) (not .cse0)))) is different from false [2024-11-09 04:54:45,287 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 04:54:45,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:45,471 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 04:54:45,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:45,490 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 04:54:45,563 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 68 treesize of output 54 [2024-11-09 04:54:45,575 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 04:54:45,588 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 04:54:45,604 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 04:54:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-09 04:54:45,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:45,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426902097] [2024-11-09 04:54:45,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:54:45,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747865071] [2024-11-09 04:54:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747865071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:45,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1372047323] [2024-11-09 04:54:45,621 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 04:54:45,621 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:45,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:45,622 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:45,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:46,658 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:47,454 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '966#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (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 (= (+ (* 5 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) (* 5 |ULTIMATE.start_main_~i~0#1|) 1) |v_ULTIMATE.start_main_#t~mem12#1_5|)))) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 04:54:47,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:47,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:54:47,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2024-11-09 04:54:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617479599] [2024-11-09 04:54:47,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:47,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:54:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:54:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=517, Unknown=1, NotChecked=46, Total=650 [2024-11-09 04:54:47,461 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 04:54:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:49,229 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2024-11-09 04:54:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 04:54:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) Word has length 22 [2024-11-09 04:54:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:49,232 INFO L225 Difference]: With dead ends: 117 [2024-11-09 04:54:49,232 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 04:54:49,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=205, Invalid=1058, Unknown=1, NotChecked=68, Total=1332 [2024-11-09 04:54:49,234 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 170 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:49,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 93 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 253 Invalid, 0 Unknown, 107 Unchecked, 0.9s Time] [2024-11-09 04:54:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 04:54:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 51. [2024-11-09 04:54:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 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 04:54:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-09 04:54:49,252 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 22 [2024-11-09 04:54:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-09 04:54:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 04:54:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-09 04:54:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:54:49,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:49,255 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:54:49,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:49,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:49,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1598326128, now seen corresponding path program 4 times [2024-11-09 04:54:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:49,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327148397] [2024-11-09 04:54:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:49,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327148397] [2024-11-09 04:54:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327148397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694835227] [2024-11-09 04:54:49,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:54:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:49,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:49,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:54:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:49,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:54:49,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:54:50,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:54:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694835227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1183120749] [2024-11-09 04:54:50,190 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:54:50,190 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:50,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:50,191 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:50,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:50,920 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:51,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1355#(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 04:54:51,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:51,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:54:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2024-11-09 04:54:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042137109] [2024-11-09 04:54:51,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:51,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:54:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:54:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:54:51,247 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 04:54:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:51,536 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2024-11-09 04:54:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:54:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 22 [2024-11-09 04:54:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:51,538 INFO L225 Difference]: With dead ends: 123 [2024-11-09 04:54:51,538 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 04:54:51,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:54:51,540 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 76 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:51,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 43 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 04:54:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2024-11-09 04:54:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 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 04:54:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-09 04:54:51,561 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 22 [2024-11-09 04:54:51,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:51,562 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-09 04:54:51,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 04:54:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-09 04:54:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 04:54:51,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:51,563 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:51,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:51,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 04:54:51,764 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:51,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1150433494, now seen corresponding path program 5 times [2024-11-09 04:54:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186910479] [2024-11-09 04:54:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:51,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186910479] [2024-11-09 04:54:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186910479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437657167] [2024-11-09 04:54:52,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:52,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:52,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:52,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:52,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:54:52,695 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 04:54:52,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:52,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:54:52,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437657167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:52,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [786699763] [2024-11-09 04:54:52,931 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:54:52,931 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:52,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:52,932 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:52,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:53,607 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:53,914 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1762#(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 04:54:53,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:53,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:54:53,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 04:54:53,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413309686] [2024-11-09 04:54:53,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:53,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:54:53,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:53,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:54:53,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:54:53,918 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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 04:54:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:54,256 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2024-11-09 04:54:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:54:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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 04:54:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:54,259 INFO L225 Difference]: With dead ends: 115 [2024-11-09 04:54:54,260 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 04:54:54,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:54:54,264 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 108 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:54,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 52 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:54:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 04:54:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 57. [2024-11-09 04:54:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.125) internal successors, (63), 56 states have internal predecessors, (63), 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 04:54:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-09 04:54:54,300 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 24 [2024-11-09 04:54:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:54,301 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-09 04:54:54,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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 04:54:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-09 04:54:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 04:54:54,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:54,303 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:54,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 04:54:54,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 04:54:54,506 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:54,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1313637671, now seen corresponding path program 2 times [2024-11-09 04:54:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733022543] [2024-11-09 04:54:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 04:54:54,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733022543] [2024-11-09 04:54:54,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733022543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305310233] [2024-11-09 04:54:54,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:54,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:54,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:54:55,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:54:55,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:55,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 04:54:55,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:55,238 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 04:54:55,364 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 8 treesize of output 1 [2024-11-09 04:54:55,372 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 04:54:55,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 83 [2024-11-09 04:54:55,541 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-09 04:54:55,542 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 04:54:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:55,793 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-09 04:54:55,794 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 04:54:55,870 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 8 treesize of output 1 [2024-11-09 04:54:56,349 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 26 treesize of output 25 [2024-11-09 04:54:56,535 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 39 treesize of output 37 [2024-11-09 04:54:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:54:57,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:55:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305310233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335020275] [2024-11-09 04:55:01,328 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 04:55:01,329 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:55:01,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:55:01,329 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:55:01,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:55:02,044 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:55:02,958 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2183#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (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 (= (+ (* 5 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) (* 5 |ULTIMATE.start_main_~i~0#1|) 1) |v_ULTIMATE.start_main_#t~mem12#1_5|)))) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 04:55:02,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:55:02,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:55:02,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 34 [2024-11-09 04:55:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328671702] [2024-11-09 04:55:02,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:02,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 04:55:02,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:55:02,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 04:55:02,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1490, Unknown=4, NotChecked=0, Total=1722 [2024-11-09 04:55:02,963 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 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 04:55:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:06,708 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2024-11-09 04:55:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 04:55:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 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 04:55:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:06,709 INFO L225 Difference]: With dead ends: 93 [2024-11-09 04:55:06,709 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 04:55:06,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=645, Invalid=3383, Unknown=4, NotChecked=0, Total=4032 [2024-11-09 04:55:06,713 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 183 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:06,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 178 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 04:55:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 04:55:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 48. [2024-11-09 04:55:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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 04:55:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-09 04:55:06,745 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 26 [2024-11-09 04:55:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:06,746 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-09 04:55:06,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 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 04:55:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-09 04:55:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 04:55:06,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:06,748 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:06,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 04:55:06,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:06,954 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:55:06,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1303543196, now seen corresponding path program 6 times [2024-11-09 04:55:06,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:55:06,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827112645] [2024-11-09 04:55:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:06,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:55:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:55:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908051573] [2024-11-09 04:55:07,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:55:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:07,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:07,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:07,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:55:08,013 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:55:08,013 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:08,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 04:55:08,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:08,134 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 04:55:08,179 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 04:55:08,230 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 04:55:08,283 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 04:55:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:08,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:22,600 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 16 DAG size of output: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:55:22,683 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 04:55:35,053 WARN L286 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 76 DAG size of output: 75 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 04:55:41,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:41,588 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 04:55:41,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:41,620 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 04:55:47,961 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 503 treesize of output 489 [2024-11-09 04:55:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:55:50,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:55:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827112645] [2024-11-09 04:55:50,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:55:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908051573] [2024-11-09 04:55:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908051573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537688672] [2024-11-09 04:55:50,149 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 04:55:50,149 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:55:50,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:55:50,149 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:55:50,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:55:50,705 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:55:51,357 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2593#(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 04:55:51,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:55:51,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:55:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 22 [2024-11-09 04:55:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496029256] [2024-11-09 04:55:51,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:51,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 04:55:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:55:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 04:55:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2024-11-09 04:55:51,360 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:15,428 WARN L286 SmtUtils]: Spent 22.43s on a formula simplification. DAG size of input: 106 DAG size of output: 101 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 04:56:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:17,002 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2024-11-09 04:56:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 04:56:17,003 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 04:56:17,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:17,005 INFO L225 Difference]: With dead ends: 152 [2024-11-09 04:56:17,006 INFO L226 Difference]: Without dead ends: 138 [2024-11-09 04:56:17,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=382, Invalid=1970, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 04:56:17,008 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 342 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:17,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 166 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 04:56:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-09 04:56:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 62. [2024-11-09 04:56:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 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 04:56:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2024-11-09 04:56:17,031 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 26 [2024-11-09 04:56:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:17,031 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2024-11-09 04:56:17,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2024-11-09 04:56:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 04:56:17,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:17,032 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:17,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:17,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:17,233 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:17,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1477025519, now seen corresponding path program 3 times [2024-11-09 04:56:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:56:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000496346] [2024-11-09 04:56:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:56:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:56:17,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983912168] [2024-11-09 04:56:17,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:56:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:17,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:17,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:17,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:56:17,750 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:56:17,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:56:17,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 04:56:17,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:17,767 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 04:56:17,814 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 04:56:17,878 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 04:56:17,955 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 04:56:18,112 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 04:56:18,223 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 04:56:18,223 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 04:56:18,329 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 04:56:18,330 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 04:56:18,841 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 04:56:18,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:19,789 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 04:56:21,498 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 04:56:25,982 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse15 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse16 (* (mod .cse9 4294967296) 8)) (.cse14 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (+ (* 8 (mod .cse14 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse2 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((v_DerPreprocessor_39 (Array Int Int))) (= 31 (select (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_39) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)) (.cse4 (select v_DerPreprocessor_39 .cse6))) (let ((.cse0 (store v_DerPreprocessor_39 .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)))) .cse8)))) (not (= .cse9 0)) (= 31 (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 .cse6)) (.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 .cse5 (+ .cse11 .cse12)))) (store .cse10 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse11 .cse12))))) .cse8)) (not (= .cse14 0)))))) is different from false [2024-11-09 04:56:28,945 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (* .cse0 8)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (< 2147483647 .cse0) (let ((.cse1 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (not .cse1) (forall ((v_DerPreprocessor_43 (Array Int Int))) (= 30 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43))) (let ((.cse4 (store (select .cse3 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse4 .cse5 (+ .cse2 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (or (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (not (= v_DerPreprocessor_42 (let ((.cse8 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse7 .cse8 (select v_DerPreprocessor_42 .cse8))))) (= 30 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (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 .cse5 (+ .cse10 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse1)))) (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (let ((.cse13 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse7 .cse13 (select v_DerPreprocessor_44 .cse13))))) (= 30 (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse16 (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse16 .cse5 (+ .cse14 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (< .cse0 2147483648))))) is different from false [2024-11-09 04:56:46,194 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:56:58,828 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:57:02,978 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 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-09 04:57:05,210 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse48 (mod .cse12 4294967296)) (.cse44 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse32 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse50 (* .cse44 8)) (.cse49 (* .cse48 8))) (let ((.cse30 (< 2147483647 .cse44)) (.cse8 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse26 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (< .cse48 2147483648)) (.cse0 (< 2147483647 .cse48)) (.cse25 (forall ((v_DerPreprocessor_42 (Array Int Int))) (= 30 (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse47 (store (select .cse46 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| .cse47) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse47 .cse5 (+ .cse45 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (.cse21 (< .cse44 2147483648)) (.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse31 (* 8 .cse32))) (and (or (let ((.cse20 (+ (select .cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse31)) 10))) (and (or (let ((.cse7 (store .cse18 .cse19 .cse20))) (and (or .cse0 (let ((.cse1 (= .cse12 0))) (and (or (not .cse1) (forall ((v_DerPreprocessor_43 (Array Int Int))) (= 30 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43))) (let ((.cse4 (store (select .cse3 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse4 .cse5 (+ .cse2 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (or (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (not (= v_DerPreprocessor_42 (store .cse7 .cse8 (select v_DerPreprocessor_42 .cse8)))) (= 30 (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse11 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse11 .cse5 (+ .cse9 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse1)))) (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store .cse7 .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse16 (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse16 .cse5 (+ .cse14 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17))) .cse21) (or (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (= 30 (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse24 (store (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse24 .cse5 (+ .cse22 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))) .cse17) (or .cse25 (not (= |c_ULTIMATE.start_main_~i~0#1| 0))) (or .cse0 (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (not (= (store (store .cse18 .cse26 .cse20) .cse8 (select v_DerPreprocessor_42 .cse8)) v_DerPreprocessor_42)) (= 30 (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse29 (store (select .cse28 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~b~0#1.base| .cse29) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse29 .cse5 (+ .cse27 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))))) .cse30))) (< .cse32 2147483648)) (or (< 2147483647 .cse32) (let ((.cse40 (+ 10 (select .cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse31))))) (and (or .cse30 (let ((.cse33 (store .cse18 .cse26 .cse40))) (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store .cse33 .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse36 (store (select .cse35 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse34 (select (select (store .cse35 |c_ULTIMATE.start_main_~b~0#1.base| .cse36) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse34 (select (select (store .cse35 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse36 .cse5 (+ .cse34 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17) (or .cse0 (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (= 30 (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (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 .cse5 (+ .cse37 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) (not (= (store .cse33 .cse8 (select v_DerPreprocessor_42 .cse8)) v_DerPreprocessor_42)))))))) (or (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store (store .cse18 .cse19 .cse40) .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse43 (store (select .cse42 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~b~0#1.base| .cse43) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse43 .cse5 (+ .cse41 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17) (or .cse0 .cse25)) .cse21))))))))) is different from false [2024-11-09 04:57:07,227 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse48 (mod .cse12 4294967296)) (.cse44 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse32 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse50 (* .cse44 8)) (.cse49 (* .cse48 8))) (let ((.cse30 (< 2147483647 .cse44)) (.cse8 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse26 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (< .cse48 2147483648)) (.cse0 (< 2147483647 .cse48)) (.cse25 (forall ((v_DerPreprocessor_42 (Array Int Int))) (= 30 (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse47 (store (select .cse46 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| .cse47) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse47 .cse5 (+ .cse45 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (.cse21 (< .cse44 2147483648)) (.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse31 (* 8 .cse32))) (and (or (let ((.cse20 (+ (select .cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse31)) 10))) (and (or (let ((.cse7 (store .cse18 .cse19 .cse20))) (and (or .cse0 (let ((.cse1 (= .cse12 0))) (and (or (not .cse1) (forall ((v_DerPreprocessor_43 (Array Int Int))) (= 30 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_43))) (let ((.cse4 (store (select .cse3 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse4 .cse5 (+ .cse2 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (or (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (not (= v_DerPreprocessor_42 (store .cse7 .cse8 (select v_DerPreprocessor_42 .cse8)))) (= 30 (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse11 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse11 .cse5 (+ .cse9 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse1)))) (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store .cse7 .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse16 (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse16 .cse5 (+ .cse14 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17))) .cse21) (or (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (= 30 (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse24 (store (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse24 .cse5 (+ .cse22 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))) .cse17) (or .cse25 (not (= |c_ULTIMATE.start_main_~i~0#1| 0))) (or .cse0 (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (not (= (store (store .cse18 .cse26 .cse20) .cse8 (select v_DerPreprocessor_42 .cse8)) v_DerPreprocessor_42)) (= 30 (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (let ((.cse29 (store (select .cse28 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~b~0#1.base| .cse29) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse29 .cse5 (+ .cse27 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))))) .cse30))) (< .cse32 2147483648)) (or (< 2147483647 .cse32) (let ((.cse40 (+ 10 (select .cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse31))))) (and (or .cse30 (let ((.cse33 (store .cse18 .cse26 .cse40))) (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store .cse33 .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse36 (store (select .cse35 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse34 (select (select (store .cse35 |c_ULTIMATE.start_main_~b~0#1.base| .cse36) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse34 (select (select (store .cse35 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse36 .cse5 (+ .cse34 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17) (or .cse0 (forall ((v_DerPreprocessor_42 (Array Int Int))) (or (= 30 (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_42))) (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 .cse5 (+ .cse37 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) (not (= (store .cse33 .cse8 (select v_DerPreprocessor_42 .cse8)) v_DerPreprocessor_42)))))))) (or (and (or (forall ((v_DerPreprocessor_44 (Array Int Int))) (or (not (= v_DerPreprocessor_44 (store (store .cse18 .cse19 .cse40) .cse13 (select v_DerPreprocessor_44 .cse13)))) (= 30 (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_44))) (let ((.cse43 (store (select .cse42 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~b~0#1.base| .cse43) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse43 .cse5 (+ .cse41 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse17) (or .cse0 .cse25)) .cse21))))))))) is different from true [2024-11-09 04:57:17,440 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:57:28,300 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:57:44,828 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 04:57:44,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:44,829 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 04:57:44,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:44,879 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 04:57:57,038 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:58:11,426 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:58:18,886 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-09 04:58:18,887 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 2886 treesize of output 2772 [2024-11-09 04:58:18,946 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 1082 treesize of output 1054 [2024-11-09 04:58:18,990 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 1016 treesize of output 1002 [2024-11-09 04:58:19,036 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 1007 treesize of output 993 [2024-11-09 04:58:19,116 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 1011 treesize of output 993 [2024-11-09 04:58:25,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:25,669 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:25,672 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:25,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:25,685 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 04:58:37,772 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 04:58:37,847 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:37,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:37,857 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 04:58:37,900 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:37,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:37,908 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 82 treesize of output 62 [2024-11-09 04:58:37,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:37,962 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:37,965 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:58:38,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:38,018 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 676 treesize of output 552 [2024-11-09 04:58:38,365 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 04:58:52,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:52,459 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 267 treesize of output 261 [2024-11-09 04:58:52,498 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 65 treesize of output 57 [2024-11-09 04:58:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2024-11-09 04:58:52,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:58:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000496346] [2024-11-09 04:58:52,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:58:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983912168] [2024-11-09 04:58:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983912168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:58:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [50135166] [2024-11-09 04:58:52,678 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 04:58:52,678 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:58:52,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:58:52,679 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:58:52,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:58:53,216 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:58:55,019 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3120#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (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 (= (+ (* 5 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) (* 5 |ULTIMATE.start_main_~i~0#1|) 1) |v_ULTIMATE.start_main_#t~mem12#1_5|)))) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 04:58:55,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:58:55,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:58:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-09 04:58:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927787201] [2024-11-09 04:58:55,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:58:55,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 04:58:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:58:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 04:58:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=822, Unknown=4, NotChecked=180, Total=1122 [2024-11-09 04:58:55,022 INFO L87 Difference]: Start difference. First operand 62 states and 70 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 04:58:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:57,507 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-11-09 04:58:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:58:57,508 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 30 [2024-11-09 04:58:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:57,508 INFO L225 Difference]: With dead ends: 65 [2024-11-09 04:58:57,509 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 04:58:57,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=226, Invalid=1264, Unknown=4, NotChecked=228, Total=1722 [2024-11-09 04:58:57,510 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:57,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 62 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 293 Invalid, 0 Unknown, 120 Unchecked, 1.2s Time] [2024-11-09 04:58:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 04:58:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-09 04:58:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:58:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-09 04:58:57,523 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-11-09 04:58:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:57,523 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-09 04:58:57,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 04:58:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-09 04:58:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 04:58:57,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:57,525 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:58:57,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 04:58:57,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:57,725 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:57,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash 397169283, now seen corresponding path program 4 times [2024-11-09 04:58:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:58:57,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692296625] [2024-11-09 04:58:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:58:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 04:58:57,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276109306] [2024-11-09 04:58:57,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:58:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:58:57,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:58:57,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 04:58:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:58,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 04:58:58,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:58,722 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 04:58:58,791 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 04:58:58,891 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 04:58:59,000 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 04:58:59,094 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 04:58:59,288 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 04:58:59,408 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:58:59,408 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 04:58:59,544 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:58:59,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-09 04:58:59,673 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:58:59,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-09 04:59:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:00,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:01,018 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 04:59:13,961 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:59:41,041 WARN L286 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 28 DAG size of output: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:00:22,064 WARN L286 SmtUtils]: Spent 38.91s on a formula simplification. DAG size of input: 110 DAG size of output: 104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:00:46,572 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 05:00:48,616 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 05:00:52,744 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 05:00:56,771 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 05:01:02,861 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (= (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|) 10) (not .cse0)) (or .cse0 (let ((.cse14 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse12 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse1 (mod .cse12 4294967296)) (.cse15 (mod .cse14 4294967296)) (.cse16 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse9 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse19 (mod .cse16 4294967296)) (.cse17 (* 8 .cse15)) (.cse18 (* .cse1 8))) (let ((.cse4 (+ .cse18 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (<= .cse15 2147483647)) (.cse6 (+ .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse2 (<= .cse19 2147483647)) (.cse7 (+ (* .cse19 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (* .cse9 8))) (and (or (and (<= .cse1 2147483647) .cse2 .cse3 (forall ((v_DerPreprocessor_65 (Array Int Int)) (v_prenex_63 Int) (v_prenex_64 Int)) (= (select (store (store (store v_DerPreprocessor_65 .cse4 (+ (select v_DerPreprocessor_65 (+ .cse5 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|)))) .cse6 v_prenex_64) .cse7 v_prenex_63) .cse8) 11))) (< 2147483647 .cse9)) (or (let ((.cse10 (+ .cse5 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (< 2147483647 .cse1) (and (forall ((v_DerPreprocessor_65 (Array Int Int)) (v_prenex_62 Int) (v_prenex_61 Int)) (= (select (store (store (store v_DerPreprocessor_65 .cse4 (+ (select v_DerPreprocessor_65 .cse10) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))) .cse6 v_prenex_62) .cse7 v_prenex_61) .cse8) 11)) (not (= .cse12 0)) .cse2 .cse3)) (or (let ((.cse13 (+ .cse18 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (and .cse2 (forall ((v_DerPreprocessor_65 (Array Int Int)) (v_DerPreprocessor_62 Int) (v_prenex_60 Int)) (= (select (store (store (store v_DerPreprocessor_65 .cse13 (+ (select v_DerPreprocessor_65 .cse10) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))) .cse6 v_DerPreprocessor_62) .cse7 v_prenex_60) .cse8) 11)) (not (= .cse14 0))) (< 2147483647 .cse15)) (or (< .cse15 2147483648) (and .cse2 (not (= .cse16 0)) (forall ((v_DerPreprocessor_65 (Array Int Int)) (v_DerPreprocessor_56 Int) (v_DerPreprocessor_60 Int)) (= (select (store (store (store v_DerPreprocessor_65 .cse13 (+ (select v_DerPreprocessor_65 .cse10) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_65) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))) (+ .cse17 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_DerPreprocessor_60) .cse7 v_DerPreprocessor_56) .cse8) 11)))))) (< .cse1 2147483648)))) (< .cse9 2147483648)))))))))) is different from false [2024-11-09 05:01:14,817 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (* .cse1 8))) (and (or (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (forall ((v_DerPreprocessor_68 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_68))) (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse0 |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|) 10))) (or (< 2147483647 .cse1) (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse2 |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|) 10) (not (= v_DerPreprocessor_67 (let ((.cse4 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse3 .cse4 (select v_DerPreprocessor_67 .cse4)))))))) (or (< .cse1 2147483648) (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (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|) 10) (not (= v_DerPreprocessor_67 (let ((.cse7 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse3 .cse7 (select v_DerPreprocessor_67 .cse7))))))))))) is different from false [2024-11-09 05:01:15,272 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 05:01:17,500 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse16 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse14 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse0 (mod .cse14 4294967296)) (.cse17 (* .cse16 8))) (let ((.cse1 (< 2147483647 .cse16)) (.cse4 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse8 (< .cse16 2147483648)) (.cse10 (* .cse0 8))) (and (or (< 2147483647 .cse0) (let ((.cse5 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse1 (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse2 |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|) 10) (not (= (store (store .cse3 .cse4 (select v_DerPreprocessor_67 .cse4)) .cse5 (select v_DerPreprocessor_67 .cse5)) v_DerPreprocessor_67))))) (or (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (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|) 10) (not (= v_DerPreprocessor_67 (store (store .cse3 .cse7 (select v_DerPreprocessor_67 .cse7)) .cse5 (select v_DerPreprocessor_67 .cse5)))))) .cse8) (or (forall ((v_DerPreprocessor_67 (Array Int Int))) (= (select (select (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse9 |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|) 10)) (not (= |c_ULTIMATE.start_main_~i~0#1| 0)))))) (or (let ((.cse12 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse1 (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse11 |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|) 10) (not (= (store (store .cse3 .cse4 (select v_DerPreprocessor_67 .cse4)) .cse12 (select v_DerPreprocessor_67 .cse12)) v_DerPreprocessor_67))))) (or (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse13 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse13 |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|) 10) (not (= v_DerPreprocessor_67 (store (store .cse3 .cse7 (select v_DerPreprocessor_67 .cse7)) .cse12 (select v_DerPreprocessor_67 .cse12)))))) .cse8))) (< .cse0 2147483648)) (or (not (= .cse14 0)) (forall ((v_DerPreprocessor_68 (Array Int Int))) (= (select (select (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_68))) (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse15 |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|) 10))))))) is different from false [2024-11-09 05:01:27,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 1 [2024-11-09 05:01:44,690 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:01:47,272 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse14 (mod .cse1 4294967296)) (.cse24 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse21 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse19 (mod .cse21 4294967296)) (.cse28 (* .cse24 8)) (.cse27 (* .cse14 8))) (let ((.cse2 (< 2147483647 .cse14)) (.cse5 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (< .cse24 2147483648)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse15 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (< 2147483647 .cse24)) (.cse10 (< .cse14 2147483648)) (.cse18 (* 8 .cse19))) (and (or (let ((.cse6 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (forall ((v_DerPreprocessor_67 (Array Int Int))) (= (select (select (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse17 |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|) 10)))) (and (or (and (or .cse0 (not (= .cse1 0))) (or .cse2 (forall ((v_prenex_78 (Array Int Int))) (or (not (= (store (store (store .cse3 .cse4 (select v_prenex_78 .cse4)) .cse5 (select v_prenex_78 .cse5)) .cse6 (select v_prenex_78 .cse6)) v_prenex_78)) (= (select (select (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_78))) (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|) 10)))) (or (forall ((v_prenex_77 (Array Int Int))) (or (= (select (select (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_77))) (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|) 10) (not (= (store (store (store .cse3 .cse4 (select v_prenex_77 .cse4)) .cse9 (select v_prenex_77 .cse9)) .cse6 (select v_prenex_77 .cse6)) v_prenex_77)))) .cse10)) .cse11) (or .cse12 (let ((.cse13 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse13 (and (<= .cse14 2147483647) (forall ((v_prenex_82 (Array Int Int))) (or (not (= (store (store (store .cse3 .cse15 (select v_prenex_82 .cse15)) .cse5 (select v_prenex_82 .cse5)) .cse6 (select v_prenex_82 .cse6)) v_prenex_82)) (= (select (select (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_82))) (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse16 |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|) 10))))) (or .cse0 (not .cse13))))))) (< 2147483647 .cse19)) (or (forall ((v_DerPreprocessor_68 (Array Int Int))) (= (select (select (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_68))) (store .cse20 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse20 |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|) 10)) (not (= .cse21 0))) (or (< .cse19 2147483648) (let ((.cse23 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse2 (and (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse22 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse22 |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|) 10) (not (= v_DerPreprocessor_67 (store (store (store .cse3 .cse15 (select v_DerPreprocessor_67 .cse15)) .cse5 (select v_DerPreprocessor_67 .cse5)) .cse23 (select v_DerPreprocessor_67 .cse23)))))) (<= .cse24 2147483647))) (or (and (or (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse25 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse25 |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|) 10) (not (= v_DerPreprocessor_67 (store (store (store .cse3 .cse4 (select v_DerPreprocessor_67 .cse4)) .cse9 (select v_DerPreprocessor_67 .cse9)) .cse23 (select v_DerPreprocessor_67 .cse23)))))) .cse11) (or (forall ((v_DerPreprocessor_67 (Array Int Int))) (or (= (select (select (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_67))) (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse26 |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|) 10) (not (= v_DerPreprocessor_67 (store (store (store .cse3 .cse15 (select v_DerPreprocessor_67 .cse15)) .cse9 (select v_DerPreprocessor_67 .cse9)) .cse23 (select v_DerPreprocessor_67 .cse23)))))) .cse12)) .cse10))))))))) is different from false [2024-11-09 05:01:52,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:52,134 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 05:01:52,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:52,178 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 05:01:57,407 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2024-11-09 05:01:57,408 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 1150 treesize of output 1130 [2024-11-09 05:01:57,446 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 814 treesize of output 810 [2024-11-09 05:01:57,468 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 811 treesize of output 807 [2024-11-09 05:01:57,505 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 808 treesize of output 804 [2024-11-09 05:01:57,665 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,668 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,671 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,677 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 05:01:57,698 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,701 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,708 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 05:01:57,756 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,759 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,762 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:57,769 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 05:01:59,839 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,847 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,850 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,853 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,859 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 66 [2024-11-09 05:01:59,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:01:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:59,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:59,994 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:02:00,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:00,036 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 104 treesize of output 106 [2024-11-09 05:02:00,084 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 05:02:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 22 not checked. [2024-11-09 05:02:00,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692296625] [2024-11-09 05:02:00,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276109306] [2024-11-09 05:02:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276109306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598023942] [2024-11-09 05:02:00,247 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:02:00,247 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:00,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:00,248 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:00,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:00,972 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:03,622 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3497#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (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 (= (+ (* 5 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) (* 5 |ULTIMATE.start_main_~i~0#1|) 1) |v_ULTIMATE.start_main_#t~mem12#1_5|)))) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 05:02:03,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:02:03,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:02:03,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-09 05:02:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205103080] [2024-11-09 05:02:03,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:02:03,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:02:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:02:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=878, Unknown=4, NotChecked=252, Total=1260 [2024-11-09 05:02:03,625 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 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 05:02:31,496 WARN L286 SmtUtils]: Spent 25.59s on a formula simplification. DAG size of input: 130 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:03:14,166 WARN L286 SmtUtils]: Spent 34.79s on a formula simplification. DAG size of input: 125 DAG size of output: 108 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:03:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:14,983 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2024-11-09 05:03:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 05:03:14,984 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 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) Word has length 30 [2024-11-09 05:03:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:14,985 INFO L225 Difference]: With dead ends: 192 [2024-11-09 05:03:14,985 INFO L226 Difference]: Without dead ends: 190 [2024-11-09 05:03:14,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 117.5s TimeCoverageRelationStatistics Valid=364, Invalid=2198, Unknown=4, NotChecked=404, Total=2970 [2024-11-09 05:03:14,987 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 297 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:14,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 212 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 505 Invalid, 0 Unknown, 668 Unchecked, 4.9s Time] [2024-11-09 05:03:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-09 05:03:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 65. [2024-11-09 05:03:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 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 05:03:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2024-11-09 05:03:15,012 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 30 [2024-11-09 05:03:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:15,012 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2024-11-09 05:03:15,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 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 05:03:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2024-11-09 05:03:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:03:15,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:15,013 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:15,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:03:15,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:03:15,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:15,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash -627348791, now seen corresponding path program 5 times [2024-11-09 05:03:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:15,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192952880] [2024-11-09 05:03:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:15,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192952880] [2024-11-09 05:03:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192952880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72225334] [2024-11-09 05:03:15,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:03:15,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:15,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:15,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:03:16,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 05:03:16,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:03:16,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:03:16,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:17,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:03:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72225334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:03:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [809484871] [2024-11-09 05:03:17,989 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:03:17,989 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:03:17,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:03:17,989 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:03:17,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:03:18,489 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:03:19,963 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4087#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (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 (= (+ (* 5 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) (* 5 |ULTIMATE.start_main_~i~0#1|) 1) |v_ULTIMATE.start_main_#t~mem12#1_5|)))) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0))' at error location [2024-11-09 05:03:19,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:03:19,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:03:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 05:03:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341984879] [2024-11-09 05:03:19,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:03:19,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:03:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:03:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:03:19,965 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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 05:03:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:22,868 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2024-11-09 05:03:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 05:03:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) Word has length 32 [2024-11-09 05:03:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:22,870 INFO L225 Difference]: With dead ends: 130 [2024-11-09 05:03:22,870 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 05:03:22,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:03:22,871 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 127 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:22,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 129 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 05:03:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 05:03:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 65. [2024-11-09 05:03:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.1875) internal successors, (76), 64 states have internal predecessors, (76), 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 05:03:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2024-11-09 05:03:22,907 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 32 [2024-11-09 05:03:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:22,907 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2024-11-09 05:03:22,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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 05:03:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2024-11-09 05:03:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 05:03:22,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:22,909 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:22,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:03:23,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:03:23,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:23,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -179086358, now seen corresponding path program 6 times [2024-11-09 05:03:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896935866] [2024-11-09 05:03:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:03:23,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282619149] [2024-11-09 05:03:23,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:03:23,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:23,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:23,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:23,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:03:24,009 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:03:24,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:03:24,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 05:03:24,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:24,045 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 05:03:24,158 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 05:03:24,302 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 05:03:24,504 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 05:03:24,745 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 05:03:25,205 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 05:03:25,469 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 05:03:25,470 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 05:03:25,672 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 05:03:25,672 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 05:03:25,925 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 05:03:25,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 51 [2024-11-09 05:03:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:03:27,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:03:28,563 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 05:03:29,283 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 05:03:56,150 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:04:02,162 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:04:28,939 WARN L286 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 119 DAG size of output: 115 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:04:39,832 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:04:44,212 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 05:04:44,408 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 05:04:52,434 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:04:54,500 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (let ((.cse32 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse19 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse20 (mod .cse19 4294967296)) (.cse22 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (.cse21 (mod .cse32 4294967296))) (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse24 (* 8 .cse21)) (.cse34 (mod .cse22 4294967296)) (.cse33 (* .cse20 8))) (let ((.cse6 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (<= .cse34 2147483647)) (.cse3 (+ .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ (* .cse34 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (< 2147483647 .cse21)) (.cse11 (< .cse20 2147483648)) (.cse8 (* .cse1 8))) (and (or (< 2147483647 .cse1) (and (forall ((v_DerPreprocessor_118 Int) (v_DerPreprocessor_124 (Array Int Int))) (= (select (store (let ((.cse4 (select v_DerPreprocessor_124 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_124) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse2 (store v_DerPreprocessor_124 .cse7 (+ .cse4 .cse5)))) (store .cse2 .cse3 (+ .cse4 .cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))) .cse9 v_DerPreprocessor_118) .cse10) 31)) (or .cse11 .cse12) .cse13)) (or (let ((.cse17 (+ .cse8 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (and (forall ((v_prenex_116 Int) (v_DerPreprocessor_124 (Array Int Int))) (= 31 (select (store (let ((.cse15 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_124) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18)) (.cse16 (select v_DerPreprocessor_124 .cse17))) (let ((.cse14 (store v_DerPreprocessor_124 .cse7 (+ .cse15 .cse16)))) (store .cse14 .cse3 (+ .cse15 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse16)))) .cse9 v_prenex_116) .cse10))) (not (= .cse19 0))) (< 2147483647 .cse20)) (or (let ((.cse27 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse28 (+ .cse33 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (< .cse21 2147483648) (and .cse13 (not (= .cse22 0)) (forall ((v_prenex_117 Int) (v_DerPreprocessor_124 (Array Int Int))) (= 31 (select (store (let ((.cse25 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_124) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18)) (.cse26 (select v_DerPreprocessor_124 .cse17))) (let ((.cse23 (store v_DerPreprocessor_124 .cse28 (+ .cse25 .cse26)))) (store .cse23 (+ .cse24 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ .cse25 .cse26 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27))))) .cse9 v_prenex_117) .cse10))))) (or (and .cse13 (forall ((v_prenex_115 Int) (v_DerPreprocessor_124 (Array Int Int))) (= 31 (select (store (let ((.cse30 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_124) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18)) (.cse31 (select v_DerPreprocessor_124 .cse17))) (let ((.cse29 (store v_DerPreprocessor_124 .cse28 (+ .cse30 .cse31)))) (store .cse29 .cse3 (+ .cse30 .cse31 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse29) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27))))) .cse9 v_prenex_115) .cse10))) (not (= .cse32 0))) .cse12))) .cse11))) (< .cse1 2147483648)))))))) (or (not .cse0) (= 30 (let ((.cse36 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse35 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse35 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse36 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|) (+ .cse35 1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))))))) is different from false [2024-11-09 05:05:06,585 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:05:09,460 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (let ((.cse9 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (* .cse9 8))) (and (or (forall ((v_DerPreprocessor_127 (Array Int Int))) (or (= 30 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_127))) (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_DerPreprocessor_127 (let ((.cse7 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse6 .cse7 (select v_DerPreprocessor_127 .cse7))))))) (< .cse9 2147483648)) (or (< 2147483647 .cse9) (forall ((v_DerPreprocessor_127 (Array Int Int))) (or (= 30 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_127))) (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 (= (let ((.cse13 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse6 .cse13 (select v_DerPreprocessor_127 .cse13))) v_DerPreprocessor_127))))))))) (or (forall ((v_DerPreprocessor_126 (Array Int Int))) (= 30 (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_126))) (let ((.cse15 (store (select .cse14 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse16 (select (select (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse15 .cse4 (+ .cse16 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse16)))))) (not .cse0)))) is different from false [2024-11-09 05:05:09,818 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 05:05:12,803 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse30 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (let ((.cse25 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse26 (= .cse25 0))) (and (or (let ((.cse23 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (mod .cse25 4294967296)) (.cse24 (* .cse23 8))) (let ((.cse14 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (< 2147483647 .cse23)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse23 2147483648)) (.cse15 (* .cse0 8))) (and (or (< 2147483647 .cse0) (let ((.cse8 (+ .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_prenex_120 (Array Int Int))) (or (= 30 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_120))) (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 (= (store (store .cse6 .cse7 (select v_prenex_120 .cse7)) .cse8 (select v_prenex_120 .cse8)) v_prenex_120)))) .cse9) (or .cse10 (forall ((v_prenex_120 (Array Int Int))) (or (= 30 (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_prenex_120))) (let ((.cse13 (store (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse13 .cse4 (+ .cse11 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= (store (store .cse6 .cse14 (select v_prenex_120 .cse14)) .cse8 (select v_prenex_120 .cse8)) v_prenex_120)))))))) (or (let ((.cse19 (+ .cse15 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (forall ((v_DerPreprocessor_127 (Array Int Int))) (or (= 30 (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_127))) (let ((.cse18 (store (select .cse17 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse18 .cse4 (+ .cse16 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_DerPreprocessor_127 (store (store .cse6 .cse14 (select v_DerPreprocessor_127 .cse14)) .cse19 (select v_DerPreprocessor_127 .cse19)))))) .cse10) (or (forall ((v_DerPreprocessor_127 (Array Int Int))) (or (= 30 (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_127))) (let ((.cse22 (store (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse20 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse20 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse22 .cse4 (+ .cse20 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (not (= v_DerPreprocessor_127 (store (store .cse6 .cse7 (select v_DerPreprocessor_127 .cse7)) .cse19 (select v_DerPreprocessor_127 .cse19)))))) .cse9))) (< .cse0 2147483648)))))) .cse26) (or (forall ((v_DerPreprocessor_126 (Array Int Int))) (= 30 (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_126))) (let ((.cse28 (store (select .cse27 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse29 (select (select (store .cse27 |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse27 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse28 .cse4 (+ .cse29 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse29)))))) (not .cse26))))) .cse30) (or (forall ((v_DerPreprocessor_127 (Array Int Int))) (= 30 (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_127))) (let ((.cse33 (store (select .cse32 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse31 (select (select (store .cse32 |c_ULTIMATE.start_main_~b~0#1.base| .cse33) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse31 (select (select (store .cse32 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse33 .cse4 (+ .cse31 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))) (not .cse30)))) is different from false [2024-11-09 05:05:32,370 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:05:43,268 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:05:57,555 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:06:05,693 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:06:11,706 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:06:17,719 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:06:32,009 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:06:48,079 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:07:00,470 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:07:10,752 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:07:18,818 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:07:20,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 1 [2024-11-09 05:07:28,259 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 05:07:28,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896935866] [2024-11-09 05:07:28,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:07:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282619149] [2024-11-09 05:07:28,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 05:07:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [173563177] [2024-11-09 05:07:28,261 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:07:28,262 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:28,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:28,262 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:28,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:28,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-09 05:07:28,269 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 05:07:28,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:07:28,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2024-11-09 05:07:28,274 ERROR L171 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2024-11-09 05:07:28,275 INFO L325 BasicCegarLoop]: Counterexample might be feasible [2024-11-09 05:07:28,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:07:28,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:28,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:07:28,494 INFO L407 BasicCegarLoop]: Path program histogram: [6, 6, 1, 1] [2024-11-09 05:07:28,508 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:07:28,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:07:28 BoogieIcfgContainer [2024-11-09 05:07:28,511 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:07:28,511 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:07:28,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:07:28,512 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:07:28,512 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:30" (3/4) ... [2024-11-09 05:07:28,515 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 05:07:28,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:07:28,516 INFO L158 Benchmark]: Toolchain (without parser) took 779669.38ms. Allocated memory was 144.7MB in the beginning and 383.8MB in the end (delta: 239.1MB). Free memory was 107.8MB in the beginning and 309.6MB in the end (delta: -201.8MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,516 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 104.9MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.62ms. Allocated memory is still 144.7MB. Free memory was 107.8MB in the beginning and 94.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.82ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 93.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: Boogie Preprocessor took 42.20ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 957.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: RCFGBuilder took 734.78ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 75.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: TraceAbstraction took 778403.52ms. Allocated memory was 144.7MB in the beginning and 383.8MB in the end (delta: 239.1MB). Free memory was 116.0MB in the beginning and 310.3MB in the end (delta: -194.3MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:28,517 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 383.8MB. Free memory was 310.3MB in the beginning and 309.6MB in the end (delta: 666.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:07:28,518 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 104.9MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.62ms. Allocated memory is still 144.7MB. Free memory was 107.8MB in the beginning and 94.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.82ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 93.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.20ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 957.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 734.78ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 75.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 778403.52ms. Allocated memory was 144.7MB in the beginning and 383.8MB in the end (delta: 239.1MB). Free memory was 116.0MB in the beginning and 310.3MB in the end (delta: -194.3MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 383.8MB. Free memory was 310.3MB in the beginning and 309.6MB in the end (delta: 666.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND TRUE !cond [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND FALSE !(i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/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 -> 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 [2024-11-09 05:07:31,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:07:31,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:07:31,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:07:31,248 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:07:31,248 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:07:31,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-fpi/ifeqn5.c Unable to find full path for "g++" [2024-11-09 05:07:33,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:07:33,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:07:33,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c [2024-11-09 05:07:33,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data/1748811d8/bf6bf061e28446469865db4afb6bb2bb/FLAG954f24e50 [2024-11-09 05:07:33,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/data/1748811d8/bf6bf061e28446469865db4afb6bb2bb [2024-11-09 05:07:33,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:07:33,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:07:33,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:07:33,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:07:33,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:07:33,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:33" (1/1) ... [2024-11-09 05:07:33,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58420c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:33, skipping insertion in model container [2024-11-09 05:07:33,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:33" (1/1) ... [2024-11-09 05:07:33,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:07:34,091 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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2024-11-09 05:07:34,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:07:34,136 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:07:34,149 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_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2024-11-09 05:07:34,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:07:34,177 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:07:34,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34 WrapperNode [2024-11-09 05:07:34,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:07:34,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:07:34,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:07:34,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:07:34,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,214 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-09 05:07:34,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:07:34,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:07:34,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:07:34,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:07:34,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:07:34,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:07:34,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:07:34,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:07:34,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (1/1) ... [2024-11-09 05:07:34,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:07:34,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:34,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:07:34,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:07:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:07:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:07:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2024-11-09 05:07:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:07:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:07:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:07:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2024-11-09 05:07:34,447 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:07:34,450 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:07:34,883 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 05:07:34,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:07:34,902 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:07:34,903 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:07:34,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:34 BoogieIcfgContainer [2024-11-09 05:07:34,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:07:34,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:07:34,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:07:34,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:07:34,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:07:33" (1/3) ... [2024-11-09 05:07:34,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffd5e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:34, skipping insertion in model container [2024-11-09 05:07:34,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:34" (2/3) ... [2024-11-09 05:07:34,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffd5e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:34, skipping insertion in model container [2024-11-09 05:07:34,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:34" (3/3) ... [2024-11-09 05:07:34,915 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn5.c [2024-11-09 05:07:34,932 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:07:34,932 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:07:34,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:07:35,000 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;@3cf84c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:07:35,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:07:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 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 05:07:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:07:35,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:35,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:35,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:35,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 145241907, now seen corresponding path program 1 times [2024-11-09 05:07:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672950039] [2024-11-09 05:07:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:35,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:35,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 05:07:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:35,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 05:07:35,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:35,229 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 05:07:35,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:07:35,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:07:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672950039] [2024-11-09 05:07:35,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672950039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:35,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:07:35,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:07:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681313685] [2024-11-09 05:07:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:35,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:07:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:07:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:07:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:07:35,270 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 05:07:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:35,286 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2024-11-09 05:07:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:07:35,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-09 05:07:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:35,298 INFO L225 Difference]: With dead ends: 46 [2024-11-09 05:07:35,299 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 05:07:35,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:07:35,307 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:35,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:07:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 05:07:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 05:07:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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 05:07:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-09 05:07:35,348 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2024-11-09 05:07:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:35,348 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-09 05:07:35,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 05:07:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2024-11-09 05:07:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:07:35,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:35,351 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:35,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 05:07:35,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:35,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:35,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash -247785103, now seen corresponding path program 1 times [2024-11-09 05:07:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:35,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263727924] [2024-11-09 05:07:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:35,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:35,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:35,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:35,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 05:07:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:35,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:07:35,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:35,917 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 05:07:35,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:07:35,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:07:35,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263727924] [2024-11-09 05:07:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263727924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:35,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:07:35,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:07:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678620390] [2024-11-09 05:07:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:35,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:07:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:07:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:07:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:07:35,926 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 05:07:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:36,262 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-11-09 05:07:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:07:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2024-11-09 05:07:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:36,271 INFO L225 Difference]: With dead ends: 51 [2024-11-09 05:07:36,271 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:07:36,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:07:36,273 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:36,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 20 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:07:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:07:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2024-11-09 05:07:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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 05:07:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-09 05:07:36,280 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2024-11-09 05:07:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:36,281 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-09 05:07:36,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 05:07:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-09 05:07:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:07:36,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:36,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:36,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 05:07:36,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:36,484 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:36,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1432094781, now seen corresponding path program 1 times [2024-11-09 05:07:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956689715] [2024-11-09 05:07:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:36,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:36,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:36,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:36,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 05:07:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:36,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:07:36,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:36,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:07:36,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:36,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2024-11-09 05:07:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:36,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:07:36,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:07:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956689715] [2024-11-09 05:07:36,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956689715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:36,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:07:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:07:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471742895] [2024-11-09 05:07:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:36,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:07:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:07:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:07:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:07:36,972 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:07:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:37,299 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-09 05:07:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:07:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 05:07:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:37,303 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:07:37,303 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 05:07:37,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:07:37,304 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:37,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 68 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:07:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 05:07:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-09 05:07:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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 05:07:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-09 05:07:37,316 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 21 [2024-11-09 05:07:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:37,316 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-09 05:07:37,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:07:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-09 05:07:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:07:37,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:37,318 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:37,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 05:07:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:37,519 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:37,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1299603754, now seen corresponding path program 1 times [2024-11-09 05:07:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372291475] [2024-11-09 05:07:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:37,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:37,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:37,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:37,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 05:07:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:37,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:07:37,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:38,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:38,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:07:38,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372291475] [2024-11-09 05:07:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372291475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:38,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [537157086] [2024-11-09 05:07:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:38,439 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:07:38,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:07:38,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:07:38,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-09 05:07:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:38,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:07:38,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:39,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [537157086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883608802] [2024-11-09 05:07:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:39,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:39,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:39,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:39,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:07:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:39,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:07:39,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:39,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883608802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:39,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:07:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8, 7, 8, 7] total 17 [2024-11-09 05:07:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74417577] [2024-11-09 05:07:39,557 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:39,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:07:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:07:39,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:07:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:07:39,562 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 05:07:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:40,324 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2024-11-09 05:07:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:07:40,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 25 [2024-11-09 05:07:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:40,325 INFO L225 Difference]: With dead ends: 93 [2024-11-09 05:07:40,326 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 05:07:40,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:07:40,327 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:40,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 61 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:07:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 05:07:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2024-11-09 05:07:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:07:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-09 05:07:40,335 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2024-11-09 05:07:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:40,335 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-09 05:07:40,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 05:07:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-09 05:07:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:07:40,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:40,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:40,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:07:40,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:40,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:40,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:07:40,938 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:40,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:40,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2042387951, now seen corresponding path program 1 times [2024-11-09 05:07:40,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:40,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732270581] [2024-11-09 05:07:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:40,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:40,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:40,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-09 05:07:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:41,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:07:41,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:41,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:07:41,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:41,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-09 05:07:41,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:41,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2024-11-09 05:07:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:07:41,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:07:42,754 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:07:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732270581] [2024-11-09 05:07:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732270581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392927387] [2024-11-09 05:07:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:07:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:07:42,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:07:42,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 05:07:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:43,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:07:43,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:43,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:07:43,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:43,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-09 05:07:43,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:43,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2024-11-09 05:07:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:43,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:07:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1392927387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972458210] [2024-11-09 05:07:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:44,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:44,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:44,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:44,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:07:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:44,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:07:44,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:44,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:07:44,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:44,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-09 05:07:44,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:07:44,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2024-11-09 05:07:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:07:44,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:45,048 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 77 treesize of output 73 [2024-11-09 05:07:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:07:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972458210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:07:45,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:07:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9, 7, 9, 8] total 16 [2024-11-09 05:07:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955319733] [2024-11-09 05:07:45,238 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:45,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:07:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:07:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:07:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:07:45,240 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 05:07:49,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:07:51,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:07:53,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:07:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:53,775 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2024-11-09 05:07:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:07:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 29 [2024-11-09 05:07:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:53,778 INFO L225 Difference]: With dead ends: 116 [2024-11-09 05:07:53,778 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 05:07:53,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 158 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:07:53,779 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 203 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:53,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 93 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 259 Invalid, 3 Unknown, 0 Unchecked, 7.8s Time] [2024-11-09 05:07:53,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 05:07:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2024-11-09 05:07:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 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 05:07:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-09 05:07:53,794 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 29 [2024-11-09 05:07:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:53,794 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-09 05:07:53,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 05:07:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-09 05:07:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:07:53,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:53,796 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:53,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:54,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-09 05:07:54,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:54,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:54,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:54,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1585695624, now seen corresponding path program 1 times [2024-11-09 05:07:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:07:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470627304] [2024-11-09 05:07:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:54,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:07:54,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:07:54,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:07:54,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 05:07:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:54,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:07:54,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:54,657 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 05:07:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:54,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:07:54,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2024-11-09 05:07:55,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:07:55,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2024-11-09 05:07:55,597 INFO L349 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2024-11-09 05:07:55,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 110 treesize of output 89 [2024-11-09 05:07:56,421 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-09 05:07:56,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 134 treesize of output 74 [2024-11-09 05:07:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:07:56,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:02,522 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 3699426 treesize of output 3633890 [2024-11-09 05:08:04,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:08:04,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12898 treesize of output 11458 [2024-11-09 05:08:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:08:10,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:08:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470627304] [2024-11-09 05:08:10,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470627304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [874447080] [2024-11-09 05:08:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:10,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:08:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:08:10,318 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:08:10,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 05:08:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:10,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:08:10,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:10,908 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 10 treesize of output 8 [2024-11-09 05:08:11,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:08:11,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:08:11,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2024-11-09 05:08:11,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:08:11,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2024-11-09 05:08:11,741 INFO L349 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2024-11-09 05:08:11,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 110 treesize of output 89 [2024-11-09 05:08:12,251 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-09 05:08:12,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 134 treesize of output 74 [2024-11-09 05:08:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:08:12,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:08:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [874447080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030216808] [2024-11-09 05:08:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:14,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:14,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:14,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40fdc2f-d2a4-473c-bfde-7a3decc1f6b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:08:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:15,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:08:15,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:15,287 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 05:08:15,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:08:15,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 05:08:15,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2024-11-09 05:08:15,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:08:15,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2024-11-09 05:08:16,158 INFO L349 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2024-11-09 05:08:16,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 110 treesize of output 89 [2024-11-09 05:08:16,646 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-09 05:08:16,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 134 treesize of output 74 [2024-11-09 05:08:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:08:16,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:19,521 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 3699426 treesize of output 3633890 [2024-11-09 05:08:20,542 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:08:20,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:08:20,554 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 4210 treesize of output 3490 [2024-11-09 05:08:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:08:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030216808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:21,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:08:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 14, 13] total 27 [2024-11-09 05:08:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625820527] [2024-11-09 05:08:21,391 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:08:21,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:08:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:08:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:08:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=582, Unknown=1, NotChecked=0, Total=702 [2024-11-09 05:08:21,393 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 27 states have internal predecessors, (79), 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 05:08:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:08:28,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:08:32,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:08:40,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:08:42,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:08:58,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:09:00,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]