./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 17:53:27,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 17:53:27,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 17:53:27,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 17:53:27,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 17:53:27,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 17:53:27,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 17:53:27,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 17:53:27,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 17:53:27,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 17:53:27,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 17:53:27,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 17:53:27,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 17:53:27,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 17:53:27,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 17:53:27,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 17:53:27,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 17:53:27,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 17:53:27,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 17:53:27,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 17:53:27,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 17:53:27,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:53:27,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 17:53:27,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 17:53:27,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 17:53:27,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 17:53:27,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 17:53:27,656 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-11-12 17:53:27,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 17:53:27,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 17:53:27,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 17:53:27,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 17:53:27,894 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 17:53:27,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-12 17:53:29,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 17:53:29,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 17:53:29,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-12 17:53:29,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aca6a0e1/defa593c08d544dbbd0fe853e1927ca7/FLAG1b8fba53b [2024-11-12 17:53:29,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aca6a0e1/defa593c08d544dbbd0fe853e1927ca7 [2024-11-12 17:53:29,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 17:53:29,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 17:53:29,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 17:53:29,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 17:53:29,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 17:53:29,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:53:29" (1/1) ... [2024-11-12 17:53:29,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686096c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:29, skipping insertion in model container [2024-11-12 17:53:29,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:53:29" (1/1) ... [2024-11-12 17:53:29,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 17:53:29,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:53:29,983 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 17:53:30,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:53:30,028 INFO L204 MainTranslator]: Completed translation [2024-11-12 17:53:30,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30 WrapperNode [2024-11-12 17:53:30,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 17:53:30,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 17:53:30,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 17:53:30,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 17:53:30,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,070 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-12 17:53:30,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 17:53:30,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 17:53:30,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 17:53:30,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 17:53:30,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,106 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 2, 12, 9, 8]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-11-12 17:53:30,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 17:53:30,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 17:53:30,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 17:53:30,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 17:53:30,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (1/1) ... [2024-11-12 17:53:30,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:53:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:30,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 17:53:30,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 17:53:30,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 17:53:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 17:53:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 17:53:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 17:53:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-11-12 17:53:30,208 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-11-12 17:53:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 17:53:30,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 17:53:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 17:53:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 17:53:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 17:53:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 17:53:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 17:53:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 17:53:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 17:53:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 17:53:30,279 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 17:53:30,281 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 17:53:30,624 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-12 17:53:30,624 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 17:53:30,641 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 17:53:30,642 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 17:53:30,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:53:30 BoogieIcfgContainer [2024-11-12 17:53:30,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 17:53:30,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 17:53:30,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 17:53:30,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 17:53:30,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:53:29" (1/3) ... [2024-11-12 17:53:30,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f131b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:53:30, skipping insertion in model container [2024-11-12 17:53:30,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:53:30" (2/3) ... [2024-11-12 17:53:30,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f131b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:53:30, skipping insertion in model container [2024-11-12 17:53:30,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:53:30" (3/3) ... [2024-11-12 17:53:30,650 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-11-12 17:53:30,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 17:53:30,663 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-12 17:53:30,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 17:53:30,727 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=PETRI_NET, 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;@48d97a2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 17:53:30,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-12 17:53:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-12 17:53:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-12 17:53:30,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:30,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 17:53:30,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:30,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-11-12 17:53:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356089450] [2024-11-12 17:53:30,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356089450] [2024-11-12 17:53:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356089450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956441982] [2024-11-12 17:53:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:31,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:31,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:31,217 INFO L87 Difference]: Start difference. First operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) 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) [2024-11-12 17:53:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:31,377 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-12 17:53:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) 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 [2024-11-12 17:53:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:31,388 INFO L225 Difference]: With dead ends: 328 [2024-11-12 17:53:31,389 INFO L226 Difference]: Without dead ends: 194 [2024-11-12 17:53:31,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:31,396 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 118 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:31,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-12 17:53:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-11-12 17:53:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 144 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-12 17:53:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-12 17:53:31,448 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-11-12 17:53:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:31,449 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-12 17:53:31,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) 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) [2024-11-12 17:53:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-12 17:53:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-12 17:53:31,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:31,450 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:31,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 17:53:31,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:31,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-11-12 17:53:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:31,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314019843] [2024-11-12 17:53:31,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:31,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314019843] [2024-11-12 17:53:31,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314019843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:31,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:31,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122252875] [2024-11-12 17:53:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:31,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:31,645 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:31,818 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-11-12 17:53:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-12 17:53:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:31,834 INFO L225 Difference]: With dead ends: 194 [2024-11-12 17:53:31,834 INFO L226 Difference]: Without dead ends: 192 [2024-11-12 17:53:31,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:31,835 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:31,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-12 17:53:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-11-12 17:53:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 144 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-12 17:53:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-12 17:53:31,856 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-11-12 17:53:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:31,856 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-12 17:53:31,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-12 17:53:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-12 17:53:31,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:31,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:31,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 17:53:31,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:31,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-11-12 17:53:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:31,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510664723] [2024-11-12 17:53:31,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:32,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510664723] [2024-11-12 17:53:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510664723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:32,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682220546] [2024-11-12 17:53:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:32,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:32,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:32,042 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:32,154 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-11-12 17:53:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-12 17:53:32,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:32,155 INFO L225 Difference]: With dead ends: 192 [2024-11-12 17:53:32,155 INFO L226 Difference]: Without dead ends: 190 [2024-11-12 17:53:32,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:32,159 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:32,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-12 17:53:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-11-12 17:53:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 144 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-12 17:53:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-11-12 17:53:32,167 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-11-12 17:53:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:32,167 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-11-12 17:53:32,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-11-12 17:53:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-12 17:53:32,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:32,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:32,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 17:53:32,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:32,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-11-12 17:53:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292857652] [2024-11-12 17:53:32,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696852116] [2024-11-12 17:53:32,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:32,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:32,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 17:53:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:32,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 17:53:32,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:32,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:32,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:53:32,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:32,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292857652] [2024-11-12 17:53:32,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:32,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696852116] [2024-11-12 17:53:32,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696852116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:32,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:32,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:53:32,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34308534] [2024-11-12 17:53:32,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:32,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:53:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:53:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:32,478 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:32,626 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-11-12 17:53:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:53:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-12 17:53:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:32,627 INFO L225 Difference]: With dead ends: 228 [2024-11-12 17:53:32,627 INFO L226 Difference]: Without dead ends: 226 [2024-11-12 17:53:32,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-12 17:53:32,628 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:32,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 689 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-12 17:53:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 175. [2024-11-12 17:53:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 159 states have internal predecessors, (182), 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) [2024-11-12 17:53:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2024-11-12 17:53:32,637 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 20 [2024-11-12 17:53:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:32,637 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2024-11-12 17:53:32,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:53:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2024-11-12 17:53:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:53:32,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:32,638 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:32,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 17:53:32,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:32,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:32,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-11-12 17:53:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403350407] [2024-11-12 17:53:32,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219634308] [2024-11-12 17:53:32,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:32,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:32,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 17:53:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:32,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 17:53:32,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:32,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:32,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:33,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:53:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:33,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:33,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403350407] [2024-11-12 17:53:33,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219634308] [2024-11-12 17:53:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219634308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:33,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:53:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-12 17:53:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046746928] [2024-11-12 17:53:33,251 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:33,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 17:53:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 17:53:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:53:33,252 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:53:37,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:41,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:45,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:45,641 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-12 17:53:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 17:53:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-12 17:53:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:45,642 INFO L225 Difference]: With dead ends: 230 [2024-11-12 17:53:45,642 INFO L226 Difference]: Without dead ends: 229 [2024-11-12 17:53:45,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-12 17:53:45,643 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:45,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 871 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-12 17:53:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-12 17:53:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-11-12 17:53:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6605504587155964) internal successors, (181), 159 states have internal predecessors, (181), 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) [2024-11-12 17:53:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-11-12 17:53:45,651 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-11-12 17:53:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:45,651 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-11-12 17:53:45,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:53:45,651 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-11-12 17:53:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 17:53:45,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:45,652 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:45,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 17:53:45,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:45,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:45,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-11-12 17:53:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908456956] [2024-11-12 17:53:45,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:45,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402315020] [2024-11-12 17:53:45,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:45,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:45,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:45,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:45,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 17:53:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:45,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 17:53:45,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:45,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:46,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:46,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908456956] [2024-11-12 17:53:46,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:46,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402315020] [2024-11-12 17:53:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402315020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:46,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:53:46,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-12 17:53:46,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501173044] [2024-11-12 17:53:46,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:46,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 17:53:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:46,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 17:53:46,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:53:46,337 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:53:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:46,826 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-12 17:53:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 17:53:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-12 17:53:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:46,828 INFO L225 Difference]: With dead ends: 229 [2024-11-12 17:53:46,828 INFO L226 Difference]: Without dead ends: 228 [2024-11-12 17:53:46,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-12 17:53:46,829 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 200 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:46,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 933 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:53:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-12 17:53:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-12 17:53:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.651376146788991) internal successors, (180), 159 states have internal predecessors, (180), 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) [2024-11-12 17:53:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-11-12 17:53:46,846 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-11-12 17:53:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:46,846 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-11-12 17:53:46,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:53:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-11-12 17:53:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:53:46,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:46,849 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:46,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 17:53:47,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:47,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:47,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:47,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-11-12 17:53:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:47,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166630184] [2024-11-12 17:53:47,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:47,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:47,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:47,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:53:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166630184] [2024-11-12 17:53:47,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166630184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112304987] [2024-11-12 17:53:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:47,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:47,177 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:47,275 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-12 17:53:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-12 17:53:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:47,276 INFO L225 Difference]: With dead ends: 212 [2024-11-12 17:53:47,276 INFO L226 Difference]: Without dead ends: 210 [2024-11-12 17:53:47,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:47,277 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:47,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-12 17:53:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-12 17:53:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6330275229357798) internal successors, (178), 159 states have internal predecessors, (178), 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) [2024-11-12 17:53:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-11-12 17:53:47,285 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-11-12 17:53:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:47,285 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-11-12 17:53:47,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-11-12 17:53:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 17:53:47,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:47,286 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2024-11-12 17:53:47,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 17:53:47,286 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:47,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-11-12 17:53:47,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:47,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229986022] [2024-11-12 17:53:47,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:47,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:47,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585405572] [2024-11-12 17:53:47,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:47,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:47,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:47,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:47,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 17:53:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:47,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 17:53:47,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:47,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:47,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:47,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:48,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-12 17:53:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 17:53:48,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:48,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229986022] [2024-11-12 17:53:48,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:48,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585405572] [2024-11-12 17:53:48,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585405572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 17:53:48,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 17:53:48,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-12 17:53:48,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516526723] [2024-11-12 17:53:48,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:48,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 17:53:48,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 17:53:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-12 17:53:48,141 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-12 17:53:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:49,025 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-12 17:53:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 17:53:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-12 17:53:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:49,027 INFO L225 Difference]: With dead ends: 230 [2024-11-12 17:53:49,027 INFO L226 Difference]: Without dead ends: 228 [2024-11-12 17:53:49,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 17:53:49,028 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 371 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:49,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1206 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 17:53:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-12 17:53:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-12 17:53:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.614678899082569) internal successors, (176), 159 states have internal predecessors, (176), 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) [2024-11-12 17:53:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-12 17:53:49,041 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-11-12 17:53:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:49,042 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-12 17:53:49,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-12 17:53:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-12 17:53:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-12 17:53:49,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:49,042 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2024-11-12 17:53:49,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 17:53:49,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:49,243 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:49,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-11-12 17:53:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695214212] [2024-11-12 17:53:49,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:53:49,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:49,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695214212] [2024-11-12 17:53:49,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695214212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:49,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:49,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561104725] [2024-11-12 17:53:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:49,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:49,347 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:49,436 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-12 17:53:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:49,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-12 17:53:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:49,437 INFO L225 Difference]: With dead ends: 212 [2024-11-12 17:53:49,437 INFO L226 Difference]: Without dead ends: 210 [2024-11-12 17:53:49,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:49,438 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 103 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:49,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 533 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-12 17:53:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-12 17:53:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 159 states have internal predecessors, (174), 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) [2024-11-12 17:53:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-12 17:53:49,444 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-11-12 17:53:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-12 17:53:49,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-12 17:53:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-12 17:53:49,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:49,445 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1] [2024-11-12 17:53:49,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 17:53:49,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:49,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-11-12 17:53:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001290333] [2024-11-12 17:53:49,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:53:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001290333] [2024-11-12 17:53:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001290333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092864313] [2024-11-12 17:53:49,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:49,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:49,566 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:49,731 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-11-12 17:53:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:53:49,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-12 17:53:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:49,733 INFO L225 Difference]: With dead ends: 210 [2024-11-12 17:53:49,733 INFO L226 Difference]: Without dead ends: 208 [2024-11-12 17:53:49,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:53:49,734 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 104 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:49,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 546 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-12 17:53:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-12 17:53:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5779816513761469) internal successors, (172), 159 states have internal predecessors, (172), 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) [2024-11-12 17:53:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-11-12 17:53:49,740 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-11-12 17:53:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:49,740 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-11-12 17:53:49,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-11-12 17:53:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-12 17:53:49,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:49,741 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-12 17:53:49,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 17:53:49,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:49,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-11-12 17:53:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182504984] [2024-11-12 17:53:49,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:53:50,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:50,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182504984] [2024-11-12 17:53:50,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182504984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:50,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:50,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099200025] [2024-11-12 17:53:50,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:50,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:50,037 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:50,506 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-11-12 17:53:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:53:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-12 17:53:50,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:50,507 INFO L225 Difference]: With dead ends: 200 [2024-11-12 17:53:50,507 INFO L226 Difference]: Without dead ends: 198 [2024-11-12 17:53:50,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:53:50,508 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:50,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 585 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:53:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-12 17:53:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-12 17:53:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 159 states have internal predecessors, (170), 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) [2024-11-12 17:53:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-12 17:53:50,514 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-11-12 17:53:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:50,514 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-12 17:53:50,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:53:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-12 17:53:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-12 17:53:50,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:50,515 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:50,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 17:53:50,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:50,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-11-12 17:53:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:50,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507437364] [2024-11-12 17:53:50,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:50,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507437364] [2024-11-12 17:53:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507437364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:50,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:50,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565291935] [2024-11-12 17:53:50,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:50,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:50,613 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:50,681 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-11-12 17:53:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-12 17:53:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:50,683 INFO L225 Difference]: With dead ends: 185 [2024-11-12 17:53:50,683 INFO L226 Difference]: Without dead ends: 183 [2024-11-12 17:53:50,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:50,684 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:50,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 566 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-12 17:53:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-12 17:53:50,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 161 states have internal predecessors, (172), 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) [2024-11-12 17:53:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-11-12 17:53:50,690 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-11-12 17:53:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:50,690 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-11-12 17:53:50,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-11-12 17:53:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-12 17:53:50,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:50,691 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:50,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 17:53:50,691 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:50,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-11-12 17:53:50,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:50,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72773750] [2024-11-12 17:53:50,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:50,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72773750] [2024-11-12 17:53:50,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72773750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:50,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454969406] [2024-11-12 17:53:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:50,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:50,803 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:50,874 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-11-12 17:53:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-12 17:53:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:50,875 INFO L225 Difference]: With dead ends: 204 [2024-11-12 17:53:50,875 INFO L226 Difference]: Without dead ends: 202 [2024-11-12 17:53:50,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:50,875 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:50,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 561 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-12 17:53:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-11-12 17:53:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 163 states have internal predecessors, (174), 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) [2024-11-12 17:53:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-12 17:53:50,881 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-11-12 17:53:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:50,882 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-12 17:53:50,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-12 17:53:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-12 17:53:50,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:50,882 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:50,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 17:53:50,883 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:50,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:50,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-11-12 17:53:50,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:50,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238206439] [2024-11-12 17:53:50,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:53:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-12 17:53:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:53:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-12 17:53:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:50,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238206439] [2024-11-12 17:53:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238206439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597750585] [2024-11-12 17:53:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:50,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:50,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:50,995 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:51,087 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-11-12 17:53:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 17:53:51,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-12 17:53:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:51,088 INFO L225 Difference]: With dead ends: 187 [2024-11-12 17:53:51,088 INFO L226 Difference]: Without dead ends: 183 [2024-11-12 17:53:51,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:51,089 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 71 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:51,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 398 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-12 17:53:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-12 17:53:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-12 17:53:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-12 17:53:51,095 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-11-12 17:53:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:51,096 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-12 17:53:51,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-12 17:53:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-12 17:53:51,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:51,097 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:51,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 17:53:51,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:51,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-11-12 17:53:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122818943] [2024-11-12 17:53:51,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:51,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:51,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122818943] [2024-11-12 17:53:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122818943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:51,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009423742] [2024-11-12 17:53:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:51,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:51,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:51,328 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:51,457 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-11-12 17:53:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:53:51,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-12 17:53:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:51,459 INFO L225 Difference]: With dead ends: 195 [2024-11-12 17:53:51,459 INFO L226 Difference]: Without dead ends: 194 [2024-11-12 17:53:51,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:53:51,461 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 60 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:51,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 621 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-12 17:53:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-11-12 17:53:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-12 17:53:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-12 17:53:51,471 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-11-12 17:53:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:51,471 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-12 17:53:51,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-12 17:53:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-12 17:53:51,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:51,472 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:51,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 17:53:51,472 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_40_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:51,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-11-12 17:53:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:51,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249702715] [2024-11-12 17:53:51,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249702715] [2024-11-12 17:53:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249702715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:51,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646245137] [2024-11-12 17:53:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:51,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:51,721 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:51,855 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-11-12 17:53:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:53:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-12 17:53:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:51,856 INFO L225 Difference]: With dead ends: 195 [2024-11-12 17:53:51,856 INFO L226 Difference]: Without dead ends: 194 [2024-11-12 17:53:51,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:53:51,857 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:51,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 626 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-12 17:53:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-11-12 17:53:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 166 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-12 17:53:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-11-12 17:53:51,865 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-11-12 17:53:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:51,865 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-11-12 17:53:51,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-12 17:53:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-11-12 17:53:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-12 17:53:51,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:51,866 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:51,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 17:53:51,866 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:51,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-11-12 17:53:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417639069] [2024-11-12 17:53:51,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:52,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:52,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:52,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:52,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:52,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417639069] [2024-11-12 17:53:52,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417639069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:52,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811253115] [2024-11-12 17:53:52,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:52,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:52,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:52,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:52,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 17:53:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:52,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-12 17:53:52,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:52,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:52,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:52,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:52,568 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-12 17:53:52,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-12 17:53:52,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 17:53:52,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 17:53:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811253115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 17:53:52,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 17:53:52,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-12 17:53:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118555335] [2024-11-12 17:53:52,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:52,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 17:53:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 17:53:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-12 17:53:52,964 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-12 17:53:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:53,542 INFO L93 Difference]: Finished difference Result 205 states and 219 transitions. [2024-11-12 17:53:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 17:53:53,543 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-11-12 17:53:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:53,544 INFO L225 Difference]: With dead ends: 205 [2024-11-12 17:53:53,544 INFO L226 Difference]: Without dead ends: 202 [2024-11-12 17:53:53,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-12 17:53:53,545 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 574 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:53,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1420 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:53:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-12 17:53:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2024-11-12 17:53:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-12 17:53:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-11-12 17:53:53,552 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-11-12 17:53:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:53,552 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-11-12 17:53:53,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-12 17:53:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-11-12 17:53:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-12 17:53:53,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:53,553 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:53,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 17:53:53,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 17:53:53,757 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:53,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-11-12 17:53:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797896698] [2024-11-12 17:53:53,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:53,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:54,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797896698] [2024-11-12 17:53:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797896698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335115768] [2024-11-12 17:53:54,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:54,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:54,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:54,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:54,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 17:53:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-12 17:53:54,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:54,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:54,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:54,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:54,445 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-12 17:53:54,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-12 17:53:54,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 17:53:54,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 17:53:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335115768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 17:53:54,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 17:53:54,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-12 17:53:54,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331217268] [2024-11-12 17:53:54,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:54,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 17:53:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:54,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 17:53:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-12 17:53:54,735 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-12 17:53:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:55,253 INFO L93 Difference]: Finished difference Result 334 states and 356 transitions. [2024-11-12 17:53:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 17:53:55,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2024-11-12 17:53:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:55,255 INFO L225 Difference]: With dead ends: 334 [2024-11-12 17:53:55,255 INFO L226 Difference]: Without dead ends: 331 [2024-11-12 17:53:55,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2024-11-12 17:53:55,256 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 487 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:55,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1661 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:53:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-12 17:53:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 257. [2024-11-12 17:53:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.521978021978022) internal successors, (277), 230 states have internal predecessors, (277), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 323 transitions. [2024-11-12 17:53:55,273 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 323 transitions. Word has length 57 [2024-11-12 17:53:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:55,274 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 323 transitions. [2024-11-12 17:53:55,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-12 17:53:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 323 transitions. [2024-11-12 17:53:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-12 17:53:55,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:55,274 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:55,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 17:53:55,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 17:53:55,478 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:55,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1285119462, now seen corresponding path program 1 times [2024-11-12 17:53:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:55,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558934808] [2024-11-12 17:53:55,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:53:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-12 17:53:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:53:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-12 17:53:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-12 17:53:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 17:53:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558934808] [2024-11-12 17:53:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558934808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:55,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:55,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187445670] [2024-11-12 17:53:55,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:55,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:55,651 INFO L87 Difference]: Start difference. First operand 257 states and 323 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:55,759 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2024-11-12 17:53:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-12 17:53:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:55,761 INFO L225 Difference]: With dead ends: 262 [2024-11-12 17:53:55,761 INFO L226 Difference]: Without dead ends: 260 [2024-11-12 17:53:55,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:55,761 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 89 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:55,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 336 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-12 17:53:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2024-11-12 17:53:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.510989010989011) internal successors, (275), 230 states have internal predecessors, (275), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2024-11-12 17:53:55,770 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 60 [2024-11-12 17:53:55,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:55,770 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2024-11-12 17:53:55,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2024-11-12 17:53:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-12 17:53:55,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:55,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:55,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 17:53:55,771 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:55,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1950782204, now seen corresponding path program 1 times [2024-11-12 17:53:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824955441] [2024-11-12 17:53:55,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:53:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-12 17:53:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:53:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-12 17:53:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-12 17:53:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 17:53:55,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824955441] [2024-11-12 17:53:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824955441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:55,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:55,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645123511] [2024-11-12 17:53:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:55,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:55,925 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:56,016 INFO L93 Difference]: Finished difference Result 260 states and 322 transitions. [2024-11-12 17:53:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 17:53:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-12 17:53:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:56,018 INFO L225 Difference]: With dead ends: 260 [2024-11-12 17:53:56,018 INFO L226 Difference]: Without dead ends: 258 [2024-11-12 17:53:56,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:56,019 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 83 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:56,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 331 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-12 17:53:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-12 17:53:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.5) internal successors, (273), 230 states have internal predecessors, (273), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2024-11-12 17:53:56,030 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 62 [2024-11-12 17:53:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:56,031 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2024-11-12 17:53:56,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2024-11-12 17:53:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-12 17:53:56,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:56,032 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2024-11-12 17:53:56,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 17:53:56,032 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2095961054, now seen corresponding path program 1 times [2024-11-12 17:53:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944697759] [2024-11-12 17:53:56,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:56,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868195960] [2024-11-12 17:53:56,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:56,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:56,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:56,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 17:53:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 17:53:56,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:56,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:53:56,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:53:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944697759] [2024-11-12 17:53:56,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868195960] [2024-11-12 17:53:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868195960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868137597] [2024-11-12 17:53:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:56,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:56,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:56,209 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:56,330 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2024-11-12 17:53:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:53:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-12 17:53:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:56,332 INFO L225 Difference]: With dead ends: 284 [2024-11-12 17:53:56,332 INFO L226 Difference]: Without dead ends: 282 [2024-11-12 17:53:56,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:53:56,333 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:56,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 454 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 131 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-12 17:53:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-12 17:53:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.489010989010989) internal successors, (271), 230 states have internal predecessors, (271), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 317 transitions. [2024-11-12 17:53:56,342 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 317 transitions. Word has length 64 [2024-11-12 17:53:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:56,342 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 317 transitions. [2024-11-12 17:53:56,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 17:53:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 317 transitions. [2024-11-12 17:53:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 17:53:56,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:56,342 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:56,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 17:53:56,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:56,543 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:56,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 322785458, now seen corresponding path program 1 times [2024-11-12 17:53:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:56,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777893248] [2024-11-12 17:53:56,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 17:53:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 17:53:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777893248] [2024-11-12 17:53:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777893248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:56,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415980934] [2024-11-12 17:53:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:56,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:56,615 INFO L87 Difference]: Start difference. First operand 257 states and 317 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:56,672 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2024-11-12 17:53:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-11-12 17:53:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:56,674 INFO L225 Difference]: With dead ends: 257 [2024-11-12 17:53:56,674 INFO L226 Difference]: Without dead ends: 256 [2024-11-12 17:53:56,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:56,675 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:56,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 369 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 17:53:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-12 17:53:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-12 17:53:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 229 states have internal predecessors, (268), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2024-11-12 17:53:56,684 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2024-11-12 17:53:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:56,684 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2024-11-12 17:53:56,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2024-11-12 17:53:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-12 17:53:56,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:56,685 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:56,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 17:53:56,685 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:56,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1416414653, now seen corresponding path program 1 times [2024-11-12 17:53:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460414287] [2024-11-12 17:53:56,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 17:53:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 17:53:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:56,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460414287] [2024-11-12 17:53:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460414287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938829513] [2024-11-12 17:53:56,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:56,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:56,757 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:56,814 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2024-11-12 17:53:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:56,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-12 17:53:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:56,816 INFO L225 Difference]: With dead ends: 256 [2024-11-12 17:53:56,816 INFO L226 Difference]: Without dead ends: 255 [2024-11-12 17:53:56,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:56,816 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:56,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 17:53:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-12 17:53:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-12 17:53:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.456043956043956) internal successors, (265), 228 states have internal predecessors, (265), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2024-11-12 17:53:56,826 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 67 [2024-11-12 17:53:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:56,826 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2024-11-12 17:53:56,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2024-11-12 17:53:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-12 17:53:56,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:56,827 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:56,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 17:53:56,827 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:56,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash 959181332, now seen corresponding path program 1 times [2024-11-12 17:53:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254538498] [2024-11-12 17:53:56,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 17:53:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 17:53:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254538498] [2024-11-12 17:53:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254538498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:56,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067982493] [2024-11-12 17:53:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:56,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:56,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:56,889 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:56,955 INFO L93 Difference]: Finished difference Result 255 states and 311 transitions. [2024-11-12 17:53:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:56,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-12 17:53:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:56,957 INFO L225 Difference]: With dead ends: 255 [2024-11-12 17:53:56,957 INFO L226 Difference]: Without dead ends: 254 [2024-11-12 17:53:56,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:56,958 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:56,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 456 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-12 17:53:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-12 17:53:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 227 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2024-11-12 17:53:56,967 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 68 [2024-11-12 17:53:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:56,967 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2024-11-12 17:53:56,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2024-11-12 17:53:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-12 17:53:56,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:56,968 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:56,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 17:53:56,968 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:56,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash -330149729, now seen corresponding path program 1 times [2024-11-12 17:53:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:56,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265857663] [2024-11-12 17:53:56,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:53:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:53:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:53:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 17:53:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 17:53:57,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265857663] [2024-11-12 17:53:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265857663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834902569] [2024-11-12 17:53:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:57,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:57,029 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:57,093 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2024-11-12 17:53:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:53:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-12 17:53:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:57,094 INFO L225 Difference]: With dead ends: 254 [2024-11-12 17:53:57,094 INFO L226 Difference]: Without dead ends: 253 [2024-11-12 17:53:57,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:57,095 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:57,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 456 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-12 17:53:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-12 17:53:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 226 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-12 17:53:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-11-12 17:53:57,104 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 69 [2024-11-12 17:53:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:57,104 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-11-12 17:53:57,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 17:53:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-11-12 17:53:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-12 17:53:57,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:57,105 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:57,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 17:53:57,105 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:57,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1644706954, now seen corresponding path program 1 times [2024-11-12 17:53:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593177269] [2024-11-12 17:53:57,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:57,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887111095] [2024-11-12 17:53:57,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:57,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:57,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:57,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:57,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 17:53:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:57,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-12 17:53:57,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:57,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:57,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:57,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-12 17:53:57,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:53:57,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:53:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 17:53:57,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593177269] [2024-11-12 17:53:57,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887111095] [2024-11-12 17:53:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887111095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:57,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:53:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-12 17:53:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12515149] [2024-11-12 17:53:57,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 17:53:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 17:53:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-12 17:53:57,620 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 17:53:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:58,159 INFO L93 Difference]: Finished difference Result 255 states and 308 transitions. [2024-11-12 17:53:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 17:53:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2024-11-12 17:53:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:58,160 INFO L225 Difference]: With dead ends: 255 [2024-11-12 17:53:58,160 INFO L226 Difference]: Without dead ends: 253 [2024-11-12 17:53:58,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-12 17:53:58,161 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 341 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:58,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1102 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:53:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-12 17:53:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-12 17:53:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3934426229508197) internal successors, (255), 225 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:53:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 303 transitions. [2024-11-12 17:53:58,171 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 303 transitions. Word has length 70 [2024-11-12 17:53:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:58,171 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 303 transitions. [2024-11-12 17:53:58,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 17:53:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 303 transitions. [2024-11-12 17:53:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-12 17:53:58,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:58,172 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:58,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 17:53:58,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 17:53:58,373 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:58,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 553692033, now seen corresponding path program 1 times [2024-11-12 17:53:58,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:58,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772760128] [2024-11-12 17:53:58,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:58,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986075620] [2024-11-12 17:53:58,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:58,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:58,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:58,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:58,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 17:53:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:58,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-12 17:53:58,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:58,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:53:58,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:53:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 17:53:58,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:53:58,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772760128] [2024-11-12 17:53:58,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986075620] [2024-11-12 17:53:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986075620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:53:58,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:53:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-12 17:53:58,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236746055] [2024-11-12 17:53:58,895 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:53:58,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 17:53:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 17:53:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-12 17:53:58,896 INFO L87 Difference]: Start difference. First operand 253 states and 303 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 17:53:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:59,397 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2024-11-12 17:53:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 17:53:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2024-11-12 17:53:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:59,398 INFO L225 Difference]: With dead ends: 292 [2024-11-12 17:53:59,399 INFO L226 Difference]: Without dead ends: 291 [2024-11-12 17:53:59,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 17:53:59,399 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 248 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:59,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1314 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:53:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-12 17:53:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 253. [2024-11-12 17:53:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3879781420765027) internal successors, (254), 225 states have internal predecessors, (254), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:53:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 302 transitions. [2024-11-12 17:53:59,409 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 302 transitions. Word has length 71 [2024-11-12 17:53:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:59,410 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 302 transitions. [2024-11-12 17:53:59,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 17:53:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 302 transitions. [2024-11-12 17:53:59,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-12 17:53:59,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:59,411 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1] [2024-11-12 17:53:59,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 17:53:59,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 17:53:59,612 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:53:59,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash 656013135, now seen corresponding path program 1 times [2024-11-12 17:53:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387252909] [2024-11-12 17:53:59,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:59,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97197876] [2024-11-12 17:53:59,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:59,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:59,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:59,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:59,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 17:53:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:59,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 17:53:59,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:59,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:59,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:53:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-12 17:53:59,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:53:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387252909] [2024-11-12 17:53:59,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97197876] [2024-11-12 17:53:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97197876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:59,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:59,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:53:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303164732] [2024-11-12 17:53:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:59,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:53:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:53:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:53:59,837 INFO L87 Difference]: Start difference. First operand 253 states and 302 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:03,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:07,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:11,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:12,006 INFO L93 Difference]: Finished difference Result 278 states and 326 transitions. [2024-11-12 17:54:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:54:12,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-11-12 17:54:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:12,008 INFO L225 Difference]: With dead ends: 278 [2024-11-12 17:54:12,008 INFO L226 Difference]: Without dead ends: 277 [2024-11-12 17:54:12,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:54:12,009 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 112 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:12,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 342 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2024-11-12 17:54:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-12 17:54:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 255. [2024-11-12 17:54:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 226 states have internal predecessors, (256), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:54:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 304 transitions. [2024-11-12 17:54:12,023 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 304 transitions. Word has length 72 [2024-11-12 17:54:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:12,024 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 304 transitions. [2024-11-12 17:54:12,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 304 transitions. [2024-11-12 17:54:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-12 17:54:12,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:12,025 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:12,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 17:54:12,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 17:54:12,226 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:12,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429158, now seen corresponding path program 1 times [2024-11-12 17:54:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526783390] [2024-11-12 17:54:12,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:54:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839443864] [2024-11-12 17:54:12,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:12,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:12,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:12,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:12,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 17:54:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 17:54:12,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:12,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:54:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-12 17:54:12,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:54:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526783390] [2024-11-12 17:54:12,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:54:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839443864] [2024-11-12 17:54:12,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839443864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:12,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:54:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042573154] [2024-11-12 17:54:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:54:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:12,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:54:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:54:12,434 INFO L87 Difference]: Start difference. First operand 255 states and 304 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:12,584 INFO L93 Difference]: Finished difference Result 277 states and 325 transitions. [2024-11-12 17:54:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:54:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-12 17:54:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:12,587 INFO L225 Difference]: With dead ends: 277 [2024-11-12 17:54:12,587 INFO L226 Difference]: Without dead ends: 276 [2024-11-12 17:54:12,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:54:12,588 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 99 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:12,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 398 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:54:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-12 17:54:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 256. [2024-11-12 17:54:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 186 states have (on average 1.381720430107527) internal successors, (257), 227 states have internal predecessors, (257), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:54:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2024-11-12 17:54:12,600 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 73 [2024-11-12 17:54:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:12,600 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2024-11-12 17:54:12,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2024-11-12 17:54:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-12 17:54:12,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:12,601 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:12,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 17:54:12,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 17:54:12,801 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:12,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:12,802 INFO L85 PathProgramCache]: Analyzing trace with hash -931565391, now seen corresponding path program 1 times [2024-11-12 17:54:12,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:12,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605336502] [2024-11-12 17:54:12,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:54:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-12 17:54:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:54:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-12 17:54:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-12 17:54:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 17:54:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 17:54:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605336502] [2024-11-12 17:54:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605336502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:12,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:12,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:54:12,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852288753] [2024-11-12 17:54:12,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:12,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:54:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:54:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:54:12,916 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:13,086 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2024-11-12 17:54:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:54:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-11-12 17:54:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:13,087 INFO L225 Difference]: With dead ends: 270 [2024-11-12 17:54:13,087 INFO L226 Difference]: Without dead ends: 268 [2024-11-12 17:54:13,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:54:13,088 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 67 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:13,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 309 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:54:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-12 17:54:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258. [2024-11-12 17:54:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.377659574468085) internal successors, (259), 229 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:54:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2024-11-12 17:54:13,098 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 74 [2024-11-12 17:54:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:13,098 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2024-11-12 17:54:13,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2024-11-12 17:54:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-12 17:54:13,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:13,099 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:13,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 17:54:13,099 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:13,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1881138669, now seen corresponding path program 1 times [2024-11-12 17:54:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:13,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938531908] [2024-11-12 17:54:13,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:54:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446292300] [2024-11-12 17:54:13,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:13,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:13,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:13,126 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:13,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 17:54:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:13,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 17:54:13,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:13,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:54:13,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:54:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-12 17:54:13,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:54:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:13,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938531908] [2024-11-12 17:54:13,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:54:13,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446292300] [2024-11-12 17:54:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446292300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:13,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:13,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:54:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477610752] [2024-11-12 17:54:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:13,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:54:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:54:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:54:13,516 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:13,718 INFO L93 Difference]: Finished difference Result 274 states and 322 transitions. [2024-11-12 17:54:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:54:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-11-12 17:54:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:13,719 INFO L225 Difference]: With dead ends: 274 [2024-11-12 17:54:13,719 INFO L226 Difference]: Without dead ends: 272 [2024-11-12 17:54:13,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:54:13,720 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 92 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:13,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 394 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:54:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-12 17:54:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-12 17:54:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 190 states have (on average 1.3736842105263158) internal successors, (261), 231 states have internal predecessors, (261), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-12 17:54:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 309 transitions. [2024-11-12 17:54:13,729 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 309 transitions. Word has length 76 [2024-11-12 17:54:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:13,730 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 309 transitions. [2024-11-12 17:54:13,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 309 transitions. [2024-11-12 17:54:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-12 17:54:13,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:13,730 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:13,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 17:54:13,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:13,931 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:13,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash 865008927, now seen corresponding path program 1 times [2024-11-12 17:54:13,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632797801] [2024-11-12 17:54:13,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:13,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:54:13,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630422077] [2024-11-12 17:54:13,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:13,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:13,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:13,952 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 17:54:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:14,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-12 17:54:14,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:14,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:54:14,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:54:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:54:14,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:54:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632797801] [2024-11-12 17:54:14,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:54:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630422077] [2024-11-12 17:54:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630422077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:54:14,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:54:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-12 17:54:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340564449] [2024-11-12 17:54:14,367 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:54:14,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 17:54:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 17:54:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-12 17:54:14,368 INFO L87 Difference]: Start difference. First operand 260 states and 309 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 17:54:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:14,831 INFO L93 Difference]: Finished difference Result 338 states and 373 transitions. [2024-11-12 17:54:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 17:54:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-11-12 17:54:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:14,833 INFO L225 Difference]: With dead ends: 338 [2024-11-12 17:54:14,833 INFO L226 Difference]: Without dead ends: 337 [2024-11-12 17:54:14,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2024-11-12 17:54:14,834 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 284 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:14,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1329 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:54:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-12 17:54:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 278. [2024-11-12 17:54:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 205 states have (on average 1.3902439024390243) internal successors, (285), 246 states have internal predecessors, (285), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-12 17:54:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 337 transitions. [2024-11-12 17:54:14,844 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 337 transitions. Word has length 78 [2024-11-12 17:54:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:14,844 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 337 transitions. [2024-11-12 17:54:14,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 17:54:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 337 transitions. [2024-11-12 17:54:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-12 17:54:14,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:14,845 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:14,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 17:54:15,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-12 17:54:15,046 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:15,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash 406975349, now seen corresponding path program 1 times [2024-11-12 17:54:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:15,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761844552] [2024-11-12 17:54:15,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:54:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-12 17:54:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:54:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-12 17:54:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-12 17:54:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 17:54:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 17:54:15,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:15,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761844552] [2024-11-12 17:54:15,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761844552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:15,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:54:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011507891] [2024-11-12 17:54:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:54:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:54:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:54:15,149 INFO L87 Difference]: Start difference. First operand 278 states and 337 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:15,262 INFO L93 Difference]: Finished difference Result 286 states and 348 transitions. [2024-11-12 17:54:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:54:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-12 17:54:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:15,264 INFO L225 Difference]: With dead ends: 286 [2024-11-12 17:54:15,264 INFO L226 Difference]: Without dead ends: 284 [2024-11-12 17:54:15,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:54:15,264 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 57 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:15,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 331 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:54:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-12 17:54:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2024-11-12 17:54:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 207 states have (on average 1.3864734299516908) internal successors, (287), 248 states have internal predecessors, (287), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-12 17:54:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2024-11-12 17:54:15,275 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 78 [2024-11-12 17:54:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:15,275 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2024-11-12 17:54:15,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 17:54:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2024-11-12 17:54:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-12 17:54:15,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:15,276 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:15,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-12 17:54:15,276 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:15,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1045473022, now seen corresponding path program 1 times [2024-11-12 17:54:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876652037] [2024-11-12 17:54:15,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:54:15,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214759669] [2024-11-12 17:54:15,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:15,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:15,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:15,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 17:54:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:15,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-12 17:54:15,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:15,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:54:15,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:54:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 17:54:15,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:54:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876652037] [2024-11-12 17:54:15,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:54:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214759669] [2024-11-12 17:54:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214759669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:54:15,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:54:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-12 17:54:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432013766] [2024-11-12 17:54:15,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:54:15,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 17:54:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 17:54:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-12 17:54:15,865 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 17:54:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:16,539 INFO L93 Difference]: Finished difference Result 335 states and 370 transitions. [2024-11-12 17:54:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 17:54:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 79 [2024-11-12 17:54:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:16,540 INFO L225 Difference]: With dead ends: 335 [2024-11-12 17:54:16,540 INFO L226 Difference]: Without dead ends: 334 [2024-11-12 17:54:16,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2024-11-12 17:54:16,541 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 277 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:16,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1342 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:54:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-12 17:54:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 280. [2024-11-12 17:54:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 207 states have (on average 1.3816425120772946) internal successors, (286), 248 states have internal predecessors, (286), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-12 17:54:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 338 transitions. [2024-11-12 17:54:16,551 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 338 transitions. Word has length 79 [2024-11-12 17:54:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:16,551 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 338 transitions. [2024-11-12 17:54:16,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 17:54:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 338 transitions. [2024-11-12 17:54:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-12 17:54:16,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:16,552 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:16,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 17:54:16,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:16,753 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:54:16,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1950074623, now seen corresponding path program 1 times [2024-11-12 17:54:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:16,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659584499] [2024-11-12 17:54:16,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:16,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 17:54:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 17:54:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 17:54:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 17:54:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 17:54:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 17:54:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659584499] [2024-11-12 17:54:17,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659584499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:54:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122155414] [2024-11-12 17:54:17,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:17,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:17,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:17,141 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:17,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 17:54:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:17,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-12 17:54:17,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:17,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:54:17,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:54:17,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:54:28,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 17:54:28,248 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 31 treesize of output 27 [2024-11-12 17:54:28,969 INFO L349 Elim1Store]: treesize reduction 52, result has 51.4 percent of original size [2024-11-12 17:54:28,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 57 treesize of output 76 [2024-11-12 17:54:30,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:54:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 17:54:30,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:54:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122155414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:54:32,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 17:54:32,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22] total 27 [2024-11-12 17:54:32,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138096144] [2024-11-12 17:54:32,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 17:54:32,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 17:54:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 17:54:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2024-11-12 17:54:32,567 INFO L87 Difference]: Start difference. First operand 280 states and 338 transitions. Second operand has 28 states, 25 states have (on average 4.12) internal successors, (103), 24 states have internal predecessors, (103), 7 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-12 17:54:36,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:41,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:45,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:54:51,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:55,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:59,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:55:03,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]