./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/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_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:52:08,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:52:08,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 06:52:08,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:52:08,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:52:08,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:52:08,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:52:08,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:52:08,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:52:08,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:52:08,355 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:52:08,356 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:52:08,356 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:52:08,357 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:52:08,358 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:52:08,359 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:52:08,360 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:52:08,361 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:52:08,364 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:52:08,365 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:52:08,365 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:52:08,366 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:52:08,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:52:08,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:52:08,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:52:08,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:52:08,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:52:08,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:52:08,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:52:08,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:52:08,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:52:08,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:52:08,371 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 06:52:08,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:52:08,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:52:08,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:52:08,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:52:08,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:52:08,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:52:08,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:52:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:52:08,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:52:08,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:52:08,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:52:08,376 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:52:08,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:52:08,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:52:08,377 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:52:08,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:52:08,377 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_172acfaa-939b-4847-8d31-482817a403f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a [2024-11-09 06:52:08,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:52:08,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:52:08,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:52:08,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:52:08,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:52:08,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c Unable to find full path for "g++" [2024-11-09 06:52:10,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:52:10,964 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:52:10,965 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-11-09 06:52:10,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/data/847edddcd/d13cce6444cb45b19870eb64e28a6778/FLAG00063223b [2024-11-09 06:52:10,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/data/847edddcd/d13cce6444cb45b19870eb64e28a6778 [2024-11-09 06:52:10,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:52:10,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:52:11,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:52:11,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:52:11,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:52:11,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:52:10" (1/1) ... [2024-11-09 06:52:11,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a595e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11, skipping insertion in model container [2024-11-09 06:52:11,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:52:10" (1/1) ... [2024-11-09 06:52:11,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:52:11,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:52:11,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:52:11,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:52:11,398 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:52:11,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11 WrapperNode [2024-11-09 06:52:11,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:52:11,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:52:11,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:52:11,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:52:11,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,473 INFO L138 Inliner]: procedures = 16, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2024-11-09 06:52:11,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:52:11,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:52:11,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:52:11,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:52:11,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:52:11,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:52:11,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:52:11,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:52:11,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (1/1) ... [2024-11-09 06:52:11,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:52:11,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:52:11,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:52:11,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:52:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:52:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:52:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:52:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:52:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_41_0 [2024-11-09 06:52:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_41_0 [2024-11-09 06:52:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:52:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:52:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:52:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:52:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:52:11,811 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:52:11,814 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:52:13,291 INFO L? ?]: Removed 357 outVars from TransFormulas that were not future-live. [2024-11-09 06:52:13,292 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:52:13,363 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:52:13,364 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:52:13,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:52:13 BoogieIcfgContainer [2024-11-09 06:52:13,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:52:13,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:52:13,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:52:13,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:52:13,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:52:10" (1/3) ... [2024-11-09 06:52:13,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713a3399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:52:13, skipping insertion in model container [2024-11-09 06:52:13,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:52:11" (2/3) ... [2024-11-09 06:52:13,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713a3399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:52:13, skipping insertion in model container [2024-11-09 06:52:13,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:52:13" (3/3) ... [2024-11-09 06:52:13,382 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohencu-ll.c [2024-11-09 06:52:13,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:52:13,405 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 138 error locations. [2024-11-09 06:52:13,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:52:13,556 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;@12352155, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:52:13,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 138 error locations. [2024-11-09 06:52:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 156 states have (on average 1.8974358974358974) internal successors, (296), 295 states have internal predecessors, (296), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:52:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 06:52:13,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:13,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 06:52:13,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:52:13,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash 370391600, now seen corresponding path program 1 times [2024-11-09 06:52:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:52:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796582739] [2024-11-09 06:52:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:52:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:14,748 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 06:52:14,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:52:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796582739] [2024-11-09 06:52:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796582739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:14,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:52:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130732372] [2024-11-09 06:52:14,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:14,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:52:14,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:52:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:52:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:52:14,808 INFO L87 Difference]: Start difference. First operand has 310 states, 156 states have (on average 1.8974358974358974) internal successors, (296), 295 states have internal predecessors, (296), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:52:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:15,431 INFO L93 Difference]: Finished difference Result 608 states and 632 transitions. [2024-11-09 06:52:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:52:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 06:52:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:15,448 INFO L225 Difference]: With dead ends: 608 [2024-11-09 06:52:15,448 INFO L226 Difference]: Without dead ends: 415 [2024-11-09 06:52:15,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:52:15,458 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 205 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:15,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1380 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:52:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-09 06:52:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 368. [2024-11-09 06:52:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 210 states have (on average 1.861904761904762) internal successors, (391), 348 states have internal predecessors, (391), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-09 06:52:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 426 transitions. [2024-11-09 06:52:15,609 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 426 transitions. Word has length 5 [2024-11-09 06:52:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:15,610 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 426 transitions. [2024-11-09 06:52:15,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:52:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 426 transitions. [2024-11-09 06:52:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:52:15,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:15,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:15,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:52:15,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_41_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:52:15,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1169904180, now seen corresponding path program 1 times [2024-11-09 06:52:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:52:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791808401] [2024-11-09 06:52:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:52:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:15,837 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 06:52:15,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:52:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791808401] [2024-11-09 06:52:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791808401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:15,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:15,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:52:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533156579] [2024-11-09 06:52:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:15,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:52:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:52:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:52:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:52:15,846 INFO L87 Difference]: Start difference. First operand 368 states and 426 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:52:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:16,316 INFO L93 Difference]: Finished difference Result 370 states and 428 transitions. [2024-11-09 06:52:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:52:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-09 06:52:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:16,322 INFO L225 Difference]: With dead ends: 370 [2024-11-09 06:52:16,322 INFO L226 Difference]: Without dead ends: 368 [2024-11-09 06:52:16,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:52:16,324 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 108 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:16,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1199 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:52:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-09 06:52:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-11-09 06:52:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 211 states have (on average 1.8436018957345972) internal successors, (389), 347 states have internal predecessors, (389), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-09 06:52:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 425 transitions. [2024-11-09 06:52:16,358 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 425 transitions. Word has length 13 [2024-11-09 06:52:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:16,358 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 425 transitions. [2024-11-09 06:52:16,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:52:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 425 transitions. [2024-11-09 06:52:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 06:52:16,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:16,360 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:16,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:52:16,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_41_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:52:16,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1907291259, now seen corresponding path program 1 times [2024-11-09 06:52:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:52:16,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450756525] [2024-11-09 06:52:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:52:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:16,483 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 06:52:16,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:52:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450756525] [2024-11-09 06:52:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450756525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:52:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138370513] [2024-11-09 06:52:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:16,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:52:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:52:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:52:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:52:16,487 INFO L87 Difference]: Start difference. First operand 368 states and 425 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:52:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:52:16,817 INFO L93 Difference]: Finished difference Result 368 states and 425 transitions. [2024-11-09 06:52:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:52:16,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-09 06:52:16,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:52:16,824 INFO L225 Difference]: With dead ends: 368 [2024-11-09 06:52:16,824 INFO L226 Difference]: Without dead ends: 367 [2024-11-09 06:52:16,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:52:16,829 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 104 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:52:16,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1028 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:52:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-09 06:52:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-11-09 06:52:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 211 states have (on average 1.8341232227488151) internal successors, (387), 346 states have internal predecessors, (387), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-09 06:52:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 423 transitions. [2024-11-09 06:52:16,876 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 423 transitions. Word has length 14 [2024-11-09 06:52:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:52:16,878 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 423 transitions. [2024-11-09 06:52:16,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:52:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 423 transitions. [2024-11-09 06:52:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:52:16,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:52:16,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:52:16,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:52:16,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_41_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:52:16,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:52:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1003513066, now seen corresponding path program 1 times [2024-11-09 06:52:16,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:52:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275613893] [2024-11-09 06:52:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:52:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:52:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840671362] [2024-11-09 06:52:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:16,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:52:16,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:52:16,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:52:16,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:52:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:17,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:52:17,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:17,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:17,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:17,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:17,671 INFO L349 Elim1Store]: treesize reduction 188, result has 24.5 percent of original size [2024-11-09 06:52:17,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 130 treesize of output 333 [2024-11-09 06:52:17,728 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 17 treesize of output 15 [2024-11-09 06:52:17,819 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:52:17,820 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 80 treesize of output 74 [2024-11-09 06:52:17,904 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 17 treesize of output 15 [2024-11-09 06:52:18,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:18,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:18,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:19,324 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,343 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,366 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,367 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 115 [2024-11-09 06:52:19,417 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 06:52:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:19,522 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,529 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,534 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:19,586 INFO L349 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2024-11-09 06:52:19,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 196 treesize of output 176 [2024-11-09 06:52:20,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,873 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:20,879 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 0 case distinctions, treesize of input 62 treesize of output 31 [2024-11-09 06:52:20,890 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-09 06:52:20,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 11 [2024-11-09 06:52:20,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:20,973 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-09 06:52:20,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 189 [2024-11-09 06:52:21,016 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 18 treesize of output 16 [2024-11-09 06:52:21,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:21,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:21,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:21,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:21,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:21,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:22,302 INFO L349 Elim1Store]: treesize reduction 272, result has 21.2 percent of original size [2024-11-09 06:52:22,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 150 treesize of output 403 [2024-11-09 06:52:22,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:22,421 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 06:52:22,421 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 130 treesize of output 122 [2024-11-09 06:52:22,464 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 17 treesize of output 15 [2024-11-09 06:52:22,501 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 17 treesize of output 15 [2024-11-09 06:52:22,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:23,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:23,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:23,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-11-09 06:52:23,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:23,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:23,639 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,655 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,659 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,700 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,707 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,720 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,730 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,734 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,734 INFO L224 Elim1Store]: Index analysis took 103 ms [2024-11-09 06:52:23,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 110 [2024-11-09 06:52:23,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:23,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:23,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:23,840 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,899 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,916 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,921 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,922 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,925 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,925 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:23,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 110 [2024-11-09 06:52:24,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,159 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,226 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-09 06:52:24,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 199 [2024-11-09 06:52:24,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:24,542 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,547 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,547 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,562 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,566 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:24,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-11-09 06:52:24,575 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 06:52:25,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:25,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:52:25,322 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:52:25,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 36 [2024-11-09 06:52:25,338 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-09 06:52:25,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 11 [2024-11-09 06:52:41,818 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 06:52:41,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:52:41,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:52:41,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275613893] [2024-11-09 06:52:41,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:52:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840671362] [2024-11-09 06:52:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840671362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:52:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:52:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:52:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520580716] [2024-11-09 06:52:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:52:41,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:52:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:52:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:52:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:52:41,821 INFO L87 Difference]: Start difference. First operand 367 states and 423 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:52:48,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:52:58,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:53:02,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:53:04,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:53:06,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:53:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:11,876 INFO L93 Difference]: Finished difference Result 592 states and 611 transitions. [2024-11-09 06:53:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:53:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-09 06:53:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:11,880 INFO L225 Difference]: With dead ends: 592 [2024-11-09 06:53:11,881 INFO L226 Difference]: Without dead ends: 590 [2024-11-09 06:53:11,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:53:11,884 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 322 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:11,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1480 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 345 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2024-11-09 06:53:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-09 06:53:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 447. [2024-11-09 06:53:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 285 states have (on average 1.8491228070175438) internal successors, (527), 420 states have internal predecessors, (527), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-09 06:53:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 573 transitions. [2024-11-09 06:53:11,995 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 573 transitions. Word has length 15 [2024-11-09 06:53:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:11,996 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 573 transitions. [2024-11-09 06:53:11,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:53:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 573 transitions. [2024-11-09 06:53:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:53:11,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:11,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:12,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:53:12,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172acfaa-939b-4847-8d31-482817a403f4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:53:12,203 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_41_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:53:12,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1991586808, now seen corresponding path program 1 times [2024-11-09 06:53:12,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:53:12,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680574638] [2024-11-09 06:53:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:53:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:12,367 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 06:53:12,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:53:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680574638] [2024-11-09 06:53:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680574638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:53:12,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:53:12,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:53:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633818448] [2024-11-09 06:53:12,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:53:12,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:53:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:53:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:53:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:53:12,370 INFO L87 Difference]: Start difference. First operand 447 states and 573 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:53:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:12,861 INFO L93 Difference]: Finished difference Result 447 states and 573 transitions. [2024-11-09 06:53:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:53:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 06:53:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:12,867 INFO L225 Difference]: With dead ends: 447 [2024-11-09 06:53:12,867 INFO L226 Difference]: Without dead ends: 446 [2024-11-09 06:53:12,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:53:12,871 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 96 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:12,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 965 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:53:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-09 06:53:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-11-09 06:53:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 285 states have (on average 1.8421052631578947) internal successors, (525), 419 states have internal predecessors, (525), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-09 06:53:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 571 transitions. [2024-11-09 06:53:12,957 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 571 transitions. Word has length 17 [2024-11-09 06:53:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:12,958 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 571 transitions. [2024-11-09 06:53:12,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:53:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 571 transitions. [2024-11-09 06:53:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:53:12,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:12,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:12,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:53:12,959 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_41_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:53:12,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1609648959, now seen corresponding path program 1 times [2024-11-09 06:53:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:53:12,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446235850] [2024-11-09 06:53:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:53:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:13,088 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 06:53:13,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:53:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446235850] [2024-11-09 06:53:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446235850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:53:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:53:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:53:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289939929] [2024-11-09 06:53:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:53:13,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:53:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:53:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:53:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:53:13,090 INFO L87 Difference]: Start difference. First operand 446 states and 571 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:53:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:13,463 INFO L93 Difference]: Finished difference Result 446 states and 571 transitions. [2024-11-09 06:53:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:53:13,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 06:53:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:13,467 INFO L225 Difference]: With dead ends: 446 [2024-11-09 06:53:13,467 INFO L226 Difference]: Without dead ends: 445 [2024-11-09 06:53:13,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:53:13,468 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 92 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:13,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1032 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:53:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-09 06:53:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-11-09 06:53:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 285 states have (on average 1.8350877192982455) internal successors, (523), 418 states have internal predecessors, (523), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-09 06:53:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 569 transitions. [2024-11-09 06:53:13,545 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 569 transitions. Word has length 18 [2024-11-09 06:53:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:13,546 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 569 transitions. [2024-11-09 06:53:13,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:53:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 569 transitions. [2024-11-09 06:53:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:53:13,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:13,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:13,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:53:13,547 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_41_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-09 06:53:13,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1640489766, now seen corresponding path program 1 times [2024-11-09 06:53:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:53:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597163554] [2024-11-09 06:53:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:53:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat