./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.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_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/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_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/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_9bbce60f-29b6-4a5c-926f-3152a512d645/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 e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:48:48,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:48:48,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 06:48:48,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:48:48,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:48:48,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:48:48,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:48:48,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:48:48,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:48:48,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:48:48,202 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:48:48,203 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:48:48,203 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:48:48,203 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:48:48,204 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:48:48,204 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:48:48,204 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:48:48,205 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:48:48,205 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:48:48,208 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:48:48,209 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:48:48,210 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:48:48,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:48:48,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:48:48,211 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:48:48,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:48:48,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:48:48,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:48:48,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:48:48,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:48:48,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:48:48,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:48:48,232 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 06:48:48,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:48:48,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:48:48,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:48:48,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:48:48,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:48:48,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:48:48,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:48:48,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:48:48,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:48:48,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:48:48,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:48:48,237 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_9bbce60f-29b6-4a5c-926f-3152a512d645/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 [2024-11-09 06:48:48,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:48:48,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:48:48,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:48:48,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:48:48,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:48:48,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c Unable to find full path for "g++" [2024-11-09 06:48:50,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:48:50,789 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:48:50,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2024-11-09 06:48:50,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/data/bc3c19089/272450dc59cb4650aa54a6ce1398b1fe/FLAG3517b5fc8 [2024-11-09 06:48:51,146 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/data/bc3c19089/272450dc59cb4650aa54a6ce1398b1fe [2024-11-09 06:48:51,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:48:51,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:48:51,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:48:51,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:48:51,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:48:51,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d5c1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51, skipping insertion in model container [2024-11-09 06:48:51,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:48:51,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:48:51,472 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:48:51,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:48:51,516 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:48:51,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51 WrapperNode [2024-11-09 06:48:51,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:48:51,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:48:51,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:48:51,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:48:51,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,559 INFO L138 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-11-09 06:48:51,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:48:51,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:48:51,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:48:51,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:48:51,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:48:51,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:48:51,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:48:51,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:48:51,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (1/1) ... [2024-11-09 06:48:51,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:48:51,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:48:51,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:48:51,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:48:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:48:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-09 06:48:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-09 06:48:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:48:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:48:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:48:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:48:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:48:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:48:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:48:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:48:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:48:51,772 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:48:51,775 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:48:52,797 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-11-09 06:48:52,798 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:48:52,857 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:48:52,858 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:48:52,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:48:52 BoogieIcfgContainer [2024-11-09 06:48:52,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:48:52,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:48:52,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:48:52,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:48:52,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:48:51" (1/3) ... [2024-11-09 06:48:52,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23acdebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:48:52, skipping insertion in model container [2024-11-09 06:48:52,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:48:51" (2/3) ... [2024-11-09 06:48:52,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23acdebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:48:52, skipping insertion in model container [2024-11-09 06:48:52,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:48:52" (3/3) ... [2024-11-09 06:48:52,874 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4.c [2024-11-09 06:48:52,895 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:48:52,896 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-09 06:48:52,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:48:52,973 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;@64710d40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:48:52,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-09 06:48:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 70 states have (on average 1.8857142857142857) internal successors, (132), 131 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:48:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 06:48:52,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:52,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 06:48:52,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:48:52,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash 190483751, now seen corresponding path program 1 times [2024-11-09 06:48:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618635581] [2024-11-09 06:48:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:53,615 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 06:48:53,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618635581] [2024-11-09 06:48:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618635581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:48:53,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979929984] [2024-11-09 06:48:53,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:53,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:48:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:48:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:48:53,657 INFO L87 Difference]: Start difference. First operand has 138 states, 70 states have (on average 1.8857142857142857) internal successors, (132), 131 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 06:48:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:54,274 INFO L93 Difference]: Finished difference Result 274 states and 283 transitions. [2024-11-09 06:48:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:48:54,295 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 06:48:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:54,307 INFO L225 Difference]: With dead ends: 274 [2024-11-09 06:48:54,308 INFO L226 Difference]: Without dead ends: 203 [2024-11-09 06:48:54,312 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 06:48:54,318 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 150 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:54,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 533 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:48:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-09 06:48:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 164. [2024-11-09 06:48:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.84375) internal successors, (177), 156 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:48:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2024-11-09 06:48:54,410 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 5 [2024-11-09 06:48:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:54,410 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2024-11-09 06:48:54,411 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 06:48:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2024-11-09 06:48:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:48:54,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:54,414 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:54,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:48:54,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:48:54,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1628707831, now seen corresponding path program 1 times [2024-11-09 06:48:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296900442] [2024-11-09 06:48:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:48:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735076402] [2024-11-09 06:48:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:54,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:48:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:48:54,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:48:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:48:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:54,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 06:48:54,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:48:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:54,763 INFO L349 Elim1Store]: treesize reduction 40, result has 35.5 percent of original size [2024-11-09 06:48:54,764 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 45 [2024-11-09 06:48:54,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:54,814 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-09 06:48:54,816 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 45 treesize of output 50 [2024-11-09 06:48:54,861 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:48:54,862 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 92 treesize of output 86 [2024-11-09 06:48:55,154 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 06:48:55,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:48:55,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296900442] [2024-11-09 06:48:55,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:48:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735076402] [2024-11-09 06:48:55,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735076402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:48:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445998540] [2024-11-09 06:48:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:48:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:48:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:48:55,162 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:48:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:55,807 INFO L93 Difference]: Finished difference Result 239 states and 244 transitions. [2024-11-09 06:48:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:48:55,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2024-11-09 06:48:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:55,809 INFO L225 Difference]: With dead ends: 239 [2024-11-09 06:48:55,810 INFO L226 Difference]: Without dead ends: 233 [2024-11-09 06:48:55,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:48:55,811 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 164 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:55,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 489 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:48:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-09 06:48:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2024-11-09 06:48:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.78125) internal successors, (171), 156 states have internal predecessors, (171), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:48:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2024-11-09 06:48:55,830 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 7 [2024-11-09 06:48:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:55,830 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2024-11-09 06:48:55,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:48:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2024-11-09 06:48:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:48:55,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:55,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:55,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:48:56,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:48:56,036 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:48:56,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1275934545, now seen corresponding path program 1 times [2024-11-09 06:48:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803321746] [2024-11-09 06:48:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:56,537 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 06:48:56,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803321746] [2024-11-09 06:48:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803321746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:48:56,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821866735] [2024-11-09 06:48:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:56,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:48:56,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:56,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:48:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:56,540 INFO L87 Difference]: Start difference. First operand 164 states and 182 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 06:48:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:57,733 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2024-11-09 06:48:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:48:57,733 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), 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 13 [2024-11-09 06:48:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:57,737 INFO L225 Difference]: With dead ends: 197 [2024-11-09 06:48:57,737 INFO L226 Difference]: Without dead ends: 196 [2024-11-09 06:48:57,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:48:57,738 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 122 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:57,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 618 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:48:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-09 06:48:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 164. [2024-11-09 06:48:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 156 states have internal predecessors, (170), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:48:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2024-11-09 06:48:57,770 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 13 [2024-11-09 06:48:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:57,770 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2024-11-09 06:48:57,770 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), 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 06:48:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2024-11-09 06:48:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 06:48:57,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:57,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:57,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:48:57,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:48:57,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash -899265178, now seen corresponding path program 1 times [2024-11-09 06:48:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:57,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201091938] [2024-11-09 06:48:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:48:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983813712] [2024-11-09 06:48:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:48:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:48:57,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:48:57,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:48:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:57,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:48:57,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:48:57,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:57,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:57,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:57,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:58,088 INFO L349 Elim1Store]: treesize reduction 111, result has 30.2 percent of original size [2024-11-09 06:48:58,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 191 [2024-11-09 06:48:58,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:58,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:48:58,166 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:48:58,214 INFO L349 Elim1Store]: treesize reduction 90, result has 15.9 percent of original size [2024-11-09 06:48:58,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 71 [2024-11-09 06:48:58,246 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:48:58,246 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 89 treesize of output 85 [2024-11-09 06:48:58,352 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 06:48:58,383 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 06:48:58,413 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 06:48:58,436 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 06:48:58,452 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 06:48:58,491 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 37 [2024-11-09 06:48:58,549 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-09 06:48:58,549 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 107 [2024-11-09 06:48:58,603 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:48:58,611 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2024-11-09 06:48:58,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 31 treesize of output 11 [2024-11-09 06:48:58,648 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 06:48:58,861 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 127 treesize of output 93 [2024-11-09 06:48:58,873 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:48:58,879 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2024-11-09 06:48:58,879 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 3 case distinctions, treesize of input 28 treesize of output 3 [2024-11-09 06:48:59,267 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 06:48:59,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:48:59,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201091938] [2024-11-09 06:48:59,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:48:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983813712] [2024-11-09 06:48:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983813712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:59,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:48:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170678447] [2024-11-09 06:48:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:59,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:48:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:48:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:48:59,271 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:49:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:00,251 INFO L93 Difference]: Finished difference Result 196 states and 201 transitions. [2024-11-09 06:49:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:49:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 14 [2024-11-09 06:49:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:00,253 INFO L225 Difference]: With dead ends: 196 [2024-11-09 06:49:00,253 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 06:49:00,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:49:00,254 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 144 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:00,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 755 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:49:00,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 06:49:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 164. [2024-11-09 06:49:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.7604166666666667) internal successors, (169), 156 states have internal predecessors, (169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2024-11-09 06:49:00,267 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 14 [2024-11-09 06:49:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:00,268 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2024-11-09 06:49:00,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:49:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2024-11-09 06:49:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:49:00,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:00,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:00,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:49:00,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:00,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:00,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2107416687, now seen corresponding path program 1 times [2024-11-09 06:49:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:00,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465069095] [2024-11-09 06:49:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:00,701 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 06:49:00,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465069095] [2024-11-09 06:49:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465069095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:49:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900760158] [2024-11-09 06:49:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:00,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:49:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:49:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:49:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:49:00,704 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 06:49:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:01,004 INFO L93 Difference]: Finished difference Result 231 states and 236 transitions. [2024-11-09 06:49:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:49:01,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-11-09 06:49:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:01,006 INFO L225 Difference]: With dead ends: 231 [2024-11-09 06:49:01,006 INFO L226 Difference]: Without dead ends: 225 [2024-11-09 06:49:01,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:49:01,007 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 126 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:01,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 496 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:49:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-09 06:49:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2024-11-09 06:49:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.6979166666666667) internal successors, (163), 156 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2024-11-09 06:49:01,019 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 15 [2024-11-09 06:49:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:01,019 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2024-11-09 06:49:01,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 06:49:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2024-11-09 06:49:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:49:01,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:01,020 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 06:49:01,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:49:01,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:01,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1222114249, now seen corresponding path program 1 times [2024-11-09 06:49:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:01,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906791929] [2024-11-09 06:49:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:49:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145871084] [2024-11-09 06:49:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:01,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:01,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:49:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:01,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 06:49:01,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:01,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:01,203 INFO L349 Elim1Store]: treesize reduction 40, result has 35.5 percent of original size [2024-11-09 06:49:01,204 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 45 [2024-11-09 06:49:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:01,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:01,246 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-09 06:49:01,246 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 45 treesize of output 50 [2024-11-09 06:49:01,267 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:49:01,267 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 61 treesize of output 57 [2024-11-09 06:49:01,613 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 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 06:49:01,658 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 06:49:01,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:01,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906791929] [2024-11-09 06:49:01,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:49:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145871084] [2024-11-09 06:49:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145871084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:01,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:49:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730572507] [2024-11-09 06:49:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:49:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:49:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:49:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:49:01,661 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 06:49:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:02,312 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2024-11-09 06:49:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:49:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 21 [2024-11-09 06:49:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:02,314 INFO L225 Difference]: With dead ends: 189 [2024-11-09 06:49:02,314 INFO L226 Difference]: Without dead ends: 188 [2024-11-09 06:49:02,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:49:02,316 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 118 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:02,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 580 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:49:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-09 06:49:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 164. [2024-11-09 06:49:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.6875) internal successors, (162), 156 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2024-11-09 06:49:02,325 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 21 [2024-11-09 06:49:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:02,325 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2024-11-09 06:49:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 06:49:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2024-11-09 06:49:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:49:02,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:02,327 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, 1] [2024-11-09 06:49:02,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:49:02,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 06:49:02,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:02,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash 769164014, now seen corresponding path program 1 times [2024-11-09 06:49:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:02,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540194538] [2024-11-09 06:49:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:49:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444283319] [2024-11-09 06:49:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:02,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:02,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:02,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:02,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:49:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:02,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 06:49:02,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:02,726 INFO L349 Elim1Store]: treesize reduction 40, result has 35.5 percent of original size [2024-11-09 06:49:02,726 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 45 [2024-11-09 06:49:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:02,777 INFO L349 Elim1Store]: treesize reduction 32, result has 45.8 percent of original size [2024-11-09 06:49:02,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 62 [2024-11-09 06:49:02,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:49:02,805 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 205 treesize of output 207 [2024-11-09 06:49:03,124 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 06:49:03,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:03,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540194538] [2024-11-09 06:49:03,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:49:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444283319] [2024-11-09 06:49:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444283319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:03,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:03,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:49:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829727384] [2024-11-09 06:49:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:03,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:49:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:49:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:49:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:49:03,129 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 06:49:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:03,781 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-09 06:49:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:49:03,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 22 [2024-11-09 06:49:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:03,783 INFO L225 Difference]: With dead ends: 224 [2024-11-09 06:49:03,783 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 06:49:03,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:49:03,784 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 140 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:03,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 564 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:49:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 06:49:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 164. [2024-11-09 06:49:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.6770833333333333) internal successors, (161), 156 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2024-11-09 06:49:03,794 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 22 [2024-11-09 06:49:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:03,794 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2024-11-09 06:49:03,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 06:49:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2024-11-09 06:49:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:49:03,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:03,795 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, 1, 1] [2024-11-09 06:49:03,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:49:03,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 06:49:03,999 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:04,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1925719271, now seen corresponding path program 1 times [2024-11-09 06:49:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172815807] [2024-11-09 06:49:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:49:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616690510] [2024-11-09 06:49:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:04,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:04,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:04,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:49:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:04,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:49:04,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:04,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,135 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 06:49:04,135 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 1 case distinctions, treesize of input 30 treesize of output 22 [2024-11-09 06:49:04,140 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 06:49:04,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,168 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 06:49:04,168 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 1 case distinctions, treesize of input 44 treesize of output 22 [2024-11-09 06:49:04,174 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 06:49:04,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,218 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2024-11-09 06:49:04,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 73 [2024-11-09 06:49:04,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,245 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 06:49:04,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2024-11-09 06:49:04,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2024-11-09 06:49:04,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,402 INFO L349 Elim1Store]: treesize reduction 44, result has 18.5 percent of original size [2024-11-09 06:49:04,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 88 treesize of output 71 [2024-11-09 06:49:04,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,449 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2024-11-09 06:49:04,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 78 [2024-11-09 06:49:04,466 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 1 [2024-11-09 06:49:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2024-11-09 06:49:04,495 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 82 treesize of output 77 [2024-11-09 06:49:04,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 54 treesize of output 53 [2024-11-09 06:49:04,534 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 1 [2024-11-09 06:49:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,595 INFO L349 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2024-11-09 06:49:04,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 136 [2024-11-09 06:49:04,614 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 1 [2024-11-09 06:49:04,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,761 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 58 treesize of output 34 [2024-11-09 06:49:04,765 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 06:49:04,772 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 06:49:04,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 54 treesize of output 53 [2024-11-09 06:49:04,850 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 1 [2024-11-09 06:49:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 58 [2024-11-09 06:49:04,887 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 1 [2024-11-09 06:49:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2024-11-09 06:49:04,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,948 INFO L349 Elim1Store]: treesize reduction 44, result has 18.5 percent of original size [2024-11-09 06:49:04,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 76 [2024-11-09 06:49:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:04,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2024-11-09 06:49:04,979 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 1 [2024-11-09 06:49:10,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:49:10,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 223376 treesize of output 202348 [2024-11-09 06:49:10,893 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 310 treesize of output 308 [2024-11-09 06:49:10,946 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 06:49:10,947 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 308 treesize of output 313 [2024-11-09 06:49:11,014 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 06:49:11,015 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 302 treesize of output 307 [2024-11-09 06:49:11,081 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 299 [2024-11-09 06:49:11,150 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 296 [2024-11-09 06:49:11,228 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 06:49:11,229 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 295 [2024-11-09 06:49:11,280 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 287 [2024-11-09 06:49:11,347 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 284 [2024-11-09 06:49:11,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 279 [2024-11-09 06:49:11,498 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 273 treesize of output 271 [2024-11-09 06:49:11,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:49:11,764 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 6 treesize of output 5 [2024-11-09 06:49:11,804 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-09 06:49:11,958 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 6 treesize of output 5 [2024-11-09 06:49:11,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2024-11-09 06:49:23,511 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 06:49:23,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:23,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172815807] [2024-11-09 06:49:23,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:49:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616690510] [2024-11-09 06:49:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616690510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:23,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:49:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223131774] [2024-11-09 06:49:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:23,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:49:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:49:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:49:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:49:23,513 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 06:49:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:33,081 INFO L93 Difference]: Finished difference Result 168 states and 172 transitions. [2024-11-09 06:49:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:49:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2024-11-09 06:49:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:33,084 INFO L225 Difference]: With dead ends: 168 [2024-11-09 06:49:33,084 INFO L226 Difference]: Without dead ends: 166 [2024-11-09 06:49:33,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2024-11-09 06:49:33,085 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 37 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:33,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 549 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2024-11-09 06:49:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-09 06:49:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2024-11-09 06:49:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.65625) internal successors, (159), 156 states have internal predecessors, (159), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 170 transitions. [2024-11-09 06:49:33,098 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 170 transitions. Word has length 23 [2024-11-09 06:49:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:33,099 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 170 transitions. [2024-11-09 06:49:33,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 06:49:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 170 transitions. [2024-11-09 06:49:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 06:49:33,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:33,100 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, 1, 1, 1, 1] [2024-11-09 06:49:33,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:49:33,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:33,301 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:33,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash 514687483, now seen corresponding path program 1 times [2024-11-09 06:49:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:33,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118100507] [2024-11-09 06:49:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:49:33,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199273026] [2024-11-09 06:49:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:33,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:33,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:33,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:49:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:33,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:49:33,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:33,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:33,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:33,649 INFO L349 Elim1Store]: treesize reduction 188, result has 24.5 percent of original size [2024-11-09 06:49:33,649 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 06:49:33,675 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 25 treesize of output 7 [2024-11-09 06:49:33,698 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 06:49:33,742 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:49:33,742 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 76 treesize of output 70 [2024-11-09 06:49:33,949 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 41 treesize of output 54 [2024-11-09 06:49:34,110 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 41 treesize of output 54 [2024-11-09 06:49:34,163 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 41 treesize of output 54 [2024-11-09 06:49:35,911 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:49:35,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,927 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 111 [2024-11-09 06:49:35,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:49:35,948 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-09 06:49:35,948 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 25 treesize of output 7 [2024-11-09 06:49:35,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2024-11-09 06:49:35,963 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 06:49:35,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,987 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:49:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:35,999 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:49:36,003 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 122 [2024-11-09 06:49:36,014 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 0 case distinctions, treesize of input 10 treesize of output 7 [2024-11-09 06:49:36,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:49:36,477 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 15 treesize of output 19 [2024-11-09 06:49:36,544 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 06:49:36,545 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:36,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118100507] [2024-11-09 06:49:36,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:49:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199273026] [2024-11-09 06:49:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199273026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:36,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:36,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 06:49:36,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320765058] [2024-11-09 06:49:36,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:36,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:49:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:49:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:49:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:49:36,547 INFO L87 Difference]: Start difference. First operand 164 states and 170 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 06:49:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:37,295 INFO L93 Difference]: Finished difference Result 221 states and 226 transitions. [2024-11-09 06:49:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:49:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 25 [2024-11-09 06:49:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:37,297 INFO L225 Difference]: With dead ends: 221 [2024-11-09 06:49:37,297 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 06:49:37,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:49:37,299 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 96 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:37,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 623 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:49:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 06:49:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 164. [2024-11-09 06:49:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.6458333333333333) internal successors, (158), 156 states have internal predecessors, (158), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:49:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2024-11-09 06:49:37,312 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 25 [2024-11-09 06:49:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:37,312 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2024-11-09 06:49:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 06:49:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2024-11-09 06:49:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 06:49:37,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:37,313 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, 1, 1, 1, 1, 1] [2024-11-09 06:49:37,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:49:37,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 06:49:37,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 06:49:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1224557134, now seen corresponding path program 1 times [2024-11-09 06:49:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215633796] [2024-11-09 06:49:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:49:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770004699] [2024-11-09 06:49:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:37,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:37,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bbce60f-29b6-4a5c-926f-3152a512d645/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:49:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:37,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:49:37,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:37,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,774 INFO L349 Elim1Store]: treesize reduction 111, result has 30.2 percent of original size [2024-11-09 06:49:37,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 191 [2024-11-09 06:49:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:37,817 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:49:37,859 INFO L349 Elim1Store]: treesize reduction 90, result has 15.9 percent of original size [2024-11-09 06:49:37,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 71 [2024-11-09 06:49:37,880 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:49:37,881 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 113 treesize of output 109 [2024-11-09 06:49:37,948 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 1 [2024-11-09 06:49:37,960 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 06:49:38,014 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 06:49:38,030 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 06:49:38,063 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 06:49:38,075 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 38 [2024-11-09 06:49:38,129 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 15 treesize of output 13 [2024-11-09 06:49:38,190 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-09 06:49:38,190 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 1 case distinctions, treesize of input 32 treesize of output 39 [2024-11-09 06:49:39,059 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 218 treesize of output 162 [2024-11-09 06:49:39,121 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 211 treesize of output 157 [2024-11-09 06:49:39,261 INFO L349 Elim1Store]: treesize reduction 127, result has 24.0 percent of original size [2024-11-09 06:49:39,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 153 treesize of output 237 [2024-11-09 06:49:44,178 INFO L349 Elim1Store]: treesize reduction 1303, result has 16.8 percent of original size [2024-11-09 06:49:44,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 11 new quantified variables, introduced 50 case distinctions, treesize of input 462 treesize of output 1066 [2024-11-09 06:50:37,896 INFO L349 Elim1Store]: treesize reduction 555, result has 16.0 percent of original size [2024-11-09 06:50:37,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 110 treesize of output 243 [2024-11-09 06:50:44,322 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:44,323 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:44,324 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:44,363 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-09 06:50:44,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:50:44,606 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:44,684 INFO L349 Elim1Store]: treesize reduction 100, result has 1.0 percent of original size [2024-11-09 06:50:44,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:50:45,341 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:45,364 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:45,366 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:45,436 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2024-11-09 06:50:45,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:50:45,732 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:45,907 INFO L349 Elim1Store]: treesize reduction 137, result has 3.5 percent of original size [2024-11-09 06:50:45,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 46 treesize of output 24 [2024-11-09 06:50:46,067 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:46,095 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:46,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:46,172 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2024-11-09 06:50:46,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:50:46,613 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:46,614 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:46,668 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-09 06:50:46,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 36 treesize of output 14 [2024-11-09 06:50:48,826 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:48,826 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:49,549 INFO L349 Elim1Store]: treesize reduction 330, result has 5.4 percent of original size [2024-11-09 06:50:49,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 23 case distinctions, treesize of input 112 treesize of output 99 [2024-11-09 06:50:51,901 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:51,901 INFO L224 Elim1Store]: Index analysis took 119 ms [2024-11-09 06:50:51,924 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:52,209 INFO L349 Elim1Store]: treesize reduction 222, result has 3.9 percent of original size [2024-11-09 06:50:52,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 55 treesize of output 32 [2024-11-09 06:50:52,488 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:52,489 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:52,604 INFO L349 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2024-11-09 06:50:52,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:50:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:50:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:50:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:50:52,847 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:52,848 INFO L224 Elim1Store]: Index analysis took 117 ms [2024-11-09 06:50:52,954 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:53,074 INFO L349 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2024-11-09 06:50:53,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 57 treesize of output 31 [2024-11-09 06:50:57,678 INFO L349 Elim1Store]: treesize reduction 554, result has 16.2 percent of original size [2024-11-09 06:50:57,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 110 treesize of output 244 [2024-11-09 06:51:05,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:05,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:05,999 INFO L224 Elim1Store]: Index analysis took 149 ms [2024-11-09 06:51:06,000 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:06,058 INFO L349 Elim1Store]: treesize reduction 65, result has 1.5 percent of original size [2024-11-09 06:51:06,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:51:06,439 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:06,440 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:06,616 INFO L349 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2024-11-09 06:51:06,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 48 treesize of output 19 [2024-11-09 06:51:06,891 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:51:21,452 WARN L286 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 454 DAG size of output: 95 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 06:51:21,452 INFO L349 Elim1Store]: treesize reduction 2167, result has 8.4 percent of original size [2024-11-09 06:51:21,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 77 case distinctions, treesize of input 231 treesize of output 629 [2024-11-09 06:59:41,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:59:42,218 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:59:42,276 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:59:42,277 INFO L224 Elim1Store]: Index analysis took 128 ms