./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E --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 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:14:23,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:14:23,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:14:23,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:14:23,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:14:23,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:14:23,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:14:23,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:14:23,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:14:23,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:14:23,560 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:14:23,560 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:14:23,560 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:14:23,562 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:14:23,563 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:14:23,563 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:14:23,563 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:14:23,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:14:23,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:14:23,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:14:23,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:14:23,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:14:23,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:14:23,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:14:23,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:14:23,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:14:23,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:14:23,568 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:14:23,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:14:23,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:14:23,569 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:14:23,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:14:23,569 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f [2024-11-14 04:14:23,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:14:23,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:14:23,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:14:23,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:14:23,947 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:14:23,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c Unable to find full path for "g++" [2024-11-14 04:14:25,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:14:26,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:14:26,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c [2024-11-14 04:14:26,064 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/data/5b38293fe/2db4cf19aebc47b5bddc6c86babde2a7/FLAGd646f875d [2024-11-14 04:14:26,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/data/5b38293fe/2db4cf19aebc47b5bddc6c86babde2a7 [2024-11-14 04:14:26,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:14:26,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:14:26,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:14:26,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:14:26,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:14:26,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19955873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26, skipping insertion in model container [2024-11-14 04:14:26,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:14:26,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:14:26,302 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:14:26,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:14:26,374 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:14:26,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26 WrapperNode [2024-11-14 04:14:26,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:14:26,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:14:26,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:14:26,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:14:26,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,420 INFO L138 Inliner]: procedures = 17, calls = 172, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 185 [2024-11-14 04:14:26,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:14:26,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:14:26,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:14:26,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:14:26,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:14:26,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:14:26,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:14:26,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:14:26,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (1/1) ... [2024-11-14 04:14:26,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:14:26,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:14:26,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:14:26,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:14:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:14:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_32_0 [2024-11-14 04:14:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_32_0 [2024-11-14 04:14:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:14:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:14:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_52_0 [2024-11-14 04:14:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_52_0 [2024-11-14 04:14:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:14:26,670 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:14:26,672 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:14:30,203 INFO L? ?]: Removed 1170 outVars from TransFormulas that were not future-live. [2024-11-14 04:14:30,203 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:14:30,297 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:14:30,297 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:14:30,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:14:30 BoogieIcfgContainer [2024-11-14 04:14:30,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:14:30,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:14:30,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:14:30,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:14:30,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:14:26" (1/3) ... [2024-11-14 04:14:30,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cd38c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:14:30, skipping insertion in model container [2024-11-14 04:14:30,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:26" (2/3) ... [2024-11-14 04:14:30,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cd38c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:14:30, skipping insertion in model container [2024-11-14 04:14:30,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:14:30" (3/3) ... [2024-11-14 04:14:30,313 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_dijkstra.c [2024-11-14 04:14:30,332 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:14:30,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_dijkstra.c that has 4 procedures, 554 locations, 1 initial locations, 0 loop locations, and 258 error locations. [2024-11-14 04:14:30,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:14:30,433 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;@6c0a3a5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:14:30,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 258 error locations. [2024-11-14 04:14:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 279 states have (on average 1.9426523297491038) internal successors, (542), 539 states have internal predecessors, (542), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:14:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:14:30,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:30,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:14:30,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-14 04:14:30,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1858519339, now seen corresponding path program 1 times [2024-11-14 04:14:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:30,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310708569] [2024-11-14 04:14:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:30,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:31,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:31,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310708569] [2024-11-14 04:14:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310708569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:31,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:31,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:14:31,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548294038] [2024-11-14 04:14:31,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:14:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:14:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:14:31,445 INFO L87 Difference]: Start difference. First operand has 554 states, 279 states have (on average 1.9426523297491038) internal successors, (542), 539 states have internal predecessors, (542), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2024-11-14 04:14:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:32,241 INFO L93 Difference]: Finished difference Result 1108 states and 1140 transitions. [2024-11-14 04:14:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:14:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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 6 [2024-11-14 04:14:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:32,258 INFO L225 Difference]: With dead ends: 1108 [2024-11-14 04:14:32,258 INFO L226 Difference]: Without dead ends: 560 [2024-11-14 04:14:32,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:14:32,271 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 14 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:32,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2927 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:14:32,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-14 04:14:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 557. [2024-11-14 04:14:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 283 states have (on average 1.9222614840989398) internal successors, (544), 542 states have internal predecessors, (544), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-14 04:14:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 569 transitions. [2024-11-14 04:14:32,361 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 569 transitions. Word has length 6 [2024-11-14 04:14:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:32,363 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 569 transitions. [2024-11-14 04:14:32,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2024-11-14 04:14:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 569 transitions. [2024-11-14 04:14:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:14:32,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:32,364 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:32,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:14:32,364 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-14 04:14:32,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1779524702, now seen corresponding path program 1 times [2024-11-14 04:14:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:32,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806778133] [2024-11-14 04:14:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:32,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806778133] [2024-11-14 04:14:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806778133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:14:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792629667] [2024-11-14 04:14:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:32,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:14:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:14:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:14:32,863 INFO L87 Difference]: Start difference. First operand 557 states and 569 transitions. Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2024-11-14 04:14:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:33,362 INFO L93 Difference]: Finished difference Result 560 states and 573 transitions. [2024-11-14 04:14:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:14:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2024-11-14 04:14:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:33,365 INFO L225 Difference]: With dead ends: 560 [2024-11-14 04:14:33,365 INFO L226 Difference]: Without dead ends: 559 [2024-11-14 04:14:33,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:14:33,367 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 11 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:33,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2914 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:14:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-14 04:14:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 558. [2024-11-14 04:14:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 284 states have (on average 1.9190140845070423) internal successors, (545), 543 states have internal predecessors, (545), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-14 04:14:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 570 transitions. [2024-11-14 04:14:33,388 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 570 transitions. Word has length 7 [2024-11-14 04:14:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:33,389 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 570 transitions. [2024-11-14 04:14:33,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2024-11-14 04:14:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 570 transitions. [2024-11-14 04:14:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:14:33,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:33,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:33,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:14:33,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-14 04:14:33,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2012506148, now seen corresponding path program 1 times [2024-11-14 04:14:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:33,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997565305] [2024-11-14 04:14:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:33,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:33,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997565305] [2024-11-14 04:14:33,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997565305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:33,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:33,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:14:33,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304500411] [2024-11-14 04:14:33,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:33,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:14:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:14:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:14:33,880 INFO L87 Difference]: Start difference. First operand 558 states and 570 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:14:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:34,828 INFO L93 Difference]: Finished difference Result 1053 states and 1076 transitions. [2024-11-14 04:14:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:14:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 04:14:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:34,833 INFO L225 Difference]: With dead ends: 1053 [2024-11-14 04:14:34,833 INFO L226 Difference]: Without dead ends: 1051 [2024-11-14 04:14:34,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:14:34,835 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 1580 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:34,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2330 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:14:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-14 04:14:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 756. [2024-11-14 04:14:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 472 states have (on average 1.923728813559322) internal successors, (908), 731 states have internal predecessors, (908), 19 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (24), 19 states have call predecessors, (24), 19 states have call successors, (24) [2024-11-14 04:14:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 951 transitions. [2024-11-14 04:14:34,870 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 951 transitions. Word has length 11 [2024-11-14 04:14:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:34,870 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 951 transitions. [2024-11-14 04:14:34,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:14:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 951 transitions. [2024-11-14 04:14:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:14:34,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:34,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:34,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:14:34,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-14 04:14:34,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1617334288, now seen corresponding path program 1 times [2024-11-14 04:14:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929040177] [2024-11-14 04:14:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:35,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929040177] [2024-11-14 04:14:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929040177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:14:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351743969] [2024-11-14 04:14:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:35,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:35,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:14:35,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:14:35,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9889b6d6-1c35-4238-89bb-e478dcf94f2b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:14:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:35,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 04:14:35,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:35,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:35,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:35,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:35,818 INFO L190 IndexEqualityManager]: detected not equals via solver