./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 3061b6dc 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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:14:05,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:14:05,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:14:05,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:14:05,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:14:05,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:14:05,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:14:05,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:14:05,869 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:14:05,869 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:14:05,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:14:05,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:14:05,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:14:05,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:14:05,871 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:14:05,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:14:05,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:14:05,873 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:14:05,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:14:05,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:14:05,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:14:05,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:14:05,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:14:05,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:14:05,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:14:05,879 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:14:05,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:14:05,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:14:05,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:14:05,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:14:05,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:14:05,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:14:05,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:14:05,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:14:05,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:14:05,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:14:05,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:14:05,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:14:05,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:14:05,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:14:05,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:14:05,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:14:05,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:14:05,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:14:05,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-11-19 11:14:06,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:14:06,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:14:06,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:14:06,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:14:06,150 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:14:06,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-19 11:14:07,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:14:07,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:14:07,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-19 11:14:07,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47add13af/f37caa53358e43af835c5f624d18126b/FLAGe7f14ae38 [2024-11-19 11:14:08,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47add13af/f37caa53358e43af835c5f624d18126b [2024-11-19 11:14:08,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:14:08,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:14:08,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:14:08,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:14:08,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:14:08,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff365b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08, skipping insertion in model container [2024-11-19 11:14:08,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:14:08,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:14:08,435 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:14:08,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:14:08,471 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:14:08,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08 WrapperNode [2024-11-19 11:14:08,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:14:08,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:14:08,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:14:08,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:14:08,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,508 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-19 11:14:08,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:14:08,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:14:08,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:14:08,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:14:08,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,540 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 2, 9, 8, 12]. 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]. [2024-11-19 11:14:08,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:14:08,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:14:08,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:14:08,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:14:08,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (1/1) ... [2024-11-19 11:14:08,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:14:08,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:08,597 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) [2024-11-19 11:14:08,600 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 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:14:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:14:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:14:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:14:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:14:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:14:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-11-19 11:14:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-11-19 11:14:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:14:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:14:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:14:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:14:08,771 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:14:08,773 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:14:09,195 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-19 11:14:09,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:14:09,217 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:14:09,218 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 11:14:09,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:14:09 BoogieIcfgContainer [2024-11-19 11:14:09,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:14:09,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:14:09,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:14:09,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:14:09,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:14:08" (1/3) ... [2024-11-19 11:14:09,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cf770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:14:09, skipping insertion in model container [2024-11-19 11:14:09,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:14:08" (2/3) ... [2024-11-19 11:14:09,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cf770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:14:09, skipping insertion in model container [2024-11-19 11:14:09,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:14:09" (3/3) ... [2024-11-19 11:14:09,230 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-11-19 11:14:09,246 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:14:09,247 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-19 11:14:09,318 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:14:09,325 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;@3eba80dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:14:09,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-19 11:14:09,329 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) [2024-11-19 11:14:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 11:14:09,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:09,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 11:14:09,335 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)] === [2024-11-19 11:14:09,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:09,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-11-19 11:14:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:09,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309485447] [2024-11-19 11:14:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309485447] [2024-11-19 11:14:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309485447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:09,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:09,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:09,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737039392] [2024-11-19 11:14:09,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:09,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:09,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:09,913 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) [2024-11-19 11:14:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:10,181 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-19 11:14:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:10,185 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 [2024-11-19 11:14:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:10,193 INFO L225 Difference]: With dead ends: 328 [2024-11-19 11:14:10,194 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 11:14:10,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:14:10,201 INFO L432 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:10,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 11:14:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-11-19 11:14:10,258 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) [2024-11-19 11:14:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-19 11:14:10,266 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-11-19 11:14:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:10,267 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-19 11:14:10,268 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) [2024-11-19 11:14:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-19 11:14:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 11:14:10,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:10,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:10,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:14:10,270 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)] === [2024-11-19 11:14:10,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-11-19 11:14:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224214931] [2024-11-19 11:14:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224214931] [2024-11-19 11:14:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224214931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295146032] [2024-11-19 11:14:10,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:10,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:10,514 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) [2024-11-19 11:14:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:10,667 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-11-19 11:14:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:10,668 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 [2024-11-19 11:14:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:10,669 INFO L225 Difference]: With dead ends: 194 [2024-11-19 11:14:10,669 INFO L226 Difference]: Without dead ends: 192 [2024-11-19 11:14:10,670 INFO L431 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 [2024-11-19 11:14:10,670 INFO L432 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 [2024-11-19 11:14:10,671 INFO L433 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] [2024-11-19 11:14:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-19 11:14:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-11-19 11:14:10,692 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) [2024-11-19 11:14:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-19 11:14:10,697 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-11-19 11:14:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:10,698 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-19 11:14:10,698 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) [2024-11-19 11:14:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-19 11:14:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 11:14:10,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:10,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:10,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:14:10,699 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)] === [2024-11-19 11:14:10,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-11-19 11:14:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757654596] [2024-11-19 11:14:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757654596] [2024-11-19 11:14:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757654596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731032823] [2024-11-19 11:14:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:10,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:10,870 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) [2024-11-19 11:14:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:11,002 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-11-19 11:14:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:11,003 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 [2024-11-19 11:14:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:11,005 INFO L225 Difference]: With dead ends: 192 [2024-11-19 11:14:11,005 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 11:14:11,005 INFO L431 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 [2024-11-19 11:14:11,009 INFO L432 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 [2024-11-19 11:14:11,010 INFO L433 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] [2024-11-19 11:14:11,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 11:14:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-11-19 11:14:11,029 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) [2024-11-19 11:14:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-11-19 11:14:11,031 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-11-19 11:14:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:11,032 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-11-19 11:14:11,032 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) [2024-11-19 11:14:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-11-19 11:14:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 11:14:11,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:11,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:11,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:14:11,036 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)] === [2024-11-19 11:14:11,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-11-19 11:14:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365038925] [2024-11-19 11:14:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:11,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585269732] [2024-11-19 11:14:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:11,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:11,070 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) [2024-11-19 11:14:11,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:14:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:11,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:14:11,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:11,229 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 [2024-11-19 11:14:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:11,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:14:11,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:11,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365038925] [2024-11-19 11:14:11,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585269732] [2024-11-19 11:14:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585269732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:11,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:11,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 11:14:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998676294] [2024-11-19 11:14:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:11,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:14:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:14:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:14:11,427 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2024-11-19 11:14:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:11,783 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2024-11-19 11:14:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:14:11,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 [2024-11-19 11:14:11,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:11,786 INFO L225 Difference]: With dead ends: 216 [2024-11-19 11:14:11,786 INFO L226 Difference]: Without dead ends: 214 [2024-11-19 11:14:11,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:14:11,788 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:11,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 976 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-19 11:14:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 157. [2024-11-19 11:14:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 144 states have internal predecessors, (157), 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) [2024-11-19 11:14:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2024-11-19 11:14:11,808 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 20 [2024-11-19 11:14:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:11,809 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2024-11-19 11:14:11,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2024-11-19 11:14:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2024-11-19 11:14:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 11:14:11,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:11,810 INFO L215 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] [2024-11-19 11:14:11,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 11:14:12,014 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 [2024-11-19 11:14:12,015 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)] === [2024-11-19 11:14:12,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-11-19 11:14:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991361876] [2024-11-19 11:14:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886950677] [2024-11-19 11:14:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:12,048 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) [2024-11-19 11:14:12,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:14:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:12,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 11:14:12,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:12,148 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 [2024-11-19 11:14:12,177 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 [2024-11-19 11:14:12,317 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 [2024-11-19 11:14:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:12,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:12,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991361876] [2024-11-19 11:14:12,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886950677] [2024-11-19 11:14:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886950677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:12,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:12,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-19 11:14:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223885846] [2024-11-19 11:14:12,467 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:12,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:14:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:14:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:14:12,468 INFO L87 Difference]: Start difference. First operand 157 states and 178 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) [2024-11-19 11:14:16,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:20,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:24,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:24,936 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-19 11:14:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:14:24,936 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 [2024-11-19 11:14:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:24,938 INFO L225 Difference]: With dead ends: 230 [2024-11-19 11:14:24,938 INFO L226 Difference]: Without dead ends: 229 [2024-11-19 11:14:24,938 INFO L431 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 [2024-11-19 11:14:24,939 INFO L432 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, 12.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:24,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 871 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-19 11:14:24,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-19 11:14:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-11-19 11:14:24,947 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) [2024-11-19 11:14:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-11-19 11:14:24,948 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-11-19 11:14:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:24,948 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-11-19 11:14:24,948 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) [2024-11-19 11:14:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-11-19 11:14:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:14:24,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:24,949 INFO L215 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] [2024-11-19 11:14:24,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:14:25,152 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 [2024-11-19 11:14:25,153 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)] === [2024-11-19 11:14:25,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-11-19 11:14:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910483728] [2024-11-19 11:14:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578255874] [2024-11-19 11:14:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:25,181 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) [2024-11-19 11:14:25,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:14:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:25,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:14:25,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:25,262 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 [2024-11-19 11:14:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:25,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910483728] [2024-11-19 11:14:25,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578255874] [2024-11-19 11:14:25,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578255874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:25,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-19 11:14:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761085909] [2024-11-19 11:14:25,697 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:25,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:14:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:14:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:14:25,698 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) [2024-11-19 11:14:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:26,368 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-19 11:14:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:14:26,369 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 [2024-11-19 11:14:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:26,371 INFO L225 Difference]: With dead ends: 229 [2024-11-19 11:14:26,371 INFO L226 Difference]: Without dead ends: 228 [2024-11-19 11:14:26,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:14:26,372 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 234 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:26,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 876 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:14:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-19 11:14:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-19 11:14:26,385 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) [2024-11-19 11:14:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-11-19 11:14:26,387 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-11-19 11:14:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:26,388 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-11-19 11:14:26,388 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) [2024-11-19 11:14:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-11-19 11:14:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:14:26,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:26,389 INFO L215 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] [2024-11-19 11:14:26,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:14:26,590 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 [2024-11-19 11:14:26,590 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)] === [2024-11-19 11:14:26,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-11-19 11:14:26,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:26,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881913442] [2024-11-19 11:14:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:14:26,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881913442] [2024-11-19 11:14:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881913442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:26,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853163706] [2024-11-19 11:14:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:26,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:26,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:26,748 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) [2024-11-19 11:14:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:26,939 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-19 11:14:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:26,939 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 [2024-11-19 11:14:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:26,940 INFO L225 Difference]: With dead ends: 212 [2024-11-19 11:14:26,941 INFO L226 Difference]: Without dead ends: 210 [2024-11-19 11:14:26,941 INFO L431 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 [2024-11-19 11:14:26,941 INFO L432 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:26,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-19 11:14:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-19 11:14:26,956 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) [2024-11-19 11:14:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-11-19 11:14:26,957 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-11-19 11:14:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:26,958 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-11-19 11:14:26,958 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) [2024-11-19 11:14:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-11-19 11:14:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 11:14:26,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:26,960 INFO L215 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] [2024-11-19 11:14:26,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 11:14:26,965 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)] === [2024-11-19 11:14:26,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-11-19 11:14:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:26,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665759672] [2024-11-19 11:14:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:26,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784846638] [2024-11-19 11:14:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:26,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:26,983 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) [2024-11-19 11:14:26,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:14:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:27,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 11:14:27,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:27,070 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 [2024-11-19 11:14:27,075 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 [2024-11-19 11:14:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:14:27,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:14:27,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665759672] [2024-11-19 11:14:27,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784846638] [2024-11-19 11:14:27,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784846638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:27,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:27,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:14:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348025909] [2024-11-19 11:14:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:27,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:14:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:14:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:14:27,308 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-19 11:14:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:27,558 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2024-11-19 11:14:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:14:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 32 [2024-11-19 11:14:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:27,561 INFO L225 Difference]: With dead ends: 226 [2024-11-19 11:14:27,561 INFO L226 Difference]: Without dead ends: 224 [2024-11-19 11:14:27,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:14:27,562 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 142 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:27,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 628 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-19 11:14:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 175. [2024-11-19 11:14:27,573 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) [2024-11-19 11:14:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-19 11:14:27,574 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-11-19 11:14:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:27,575 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-19 11:14:27,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-19 11:14:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-19 11:14:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 11:14:27,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:27,576 INFO L215 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] [2024-11-19 11:14:27,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 11:14:27,776 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 [2024-11-19 11:14:27,777 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)] === [2024-11-19 11:14:27,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-11-19 11:14:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:27,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254384816] [2024-11-19 11:14:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:14:27,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:27,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254384816] [2024-11-19 11:14:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254384816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:27,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029494497] [2024-11-19 11:14:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:27,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:27,960 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) [2024-11-19 11:14:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:28,082 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-19 11:14:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:28,082 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 [2024-11-19 11:14:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:28,083 INFO L225 Difference]: With dead ends: 212 [2024-11-19 11:14:28,084 INFO L226 Difference]: Without dead ends: 210 [2024-11-19 11:14:28,084 INFO L431 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 [2024-11-19 11:14:28,084 INFO L432 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 [2024-11-19 11:14:28,085 INFO L433 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] [2024-11-19 11:14:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-19 11:14:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-19 11:14:28,092 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) [2024-11-19 11:14:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-19 11:14:28,093 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-11-19 11:14:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:28,093 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-19 11:14:28,093 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) [2024-11-19 11:14:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-19 11:14:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 11:14:28,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:28,094 INFO L215 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] [2024-11-19 11:14:28,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 11:14:28,094 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)] === [2024-11-19 11:14:28,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-11-19 11:14:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:28,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522685714] [2024-11-19 11:14:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:28,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:14:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522685714] [2024-11-19 11:14:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522685714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:28,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965028117] [2024-11-19 11:14:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:28,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:28,262 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) [2024-11-19 11:14:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:28,528 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-11-19 11:14:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:14:28,529 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 [2024-11-19 11:14:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:28,530 INFO L225 Difference]: With dead ends: 210 [2024-11-19 11:14:28,530 INFO L226 Difference]: Without dead ends: 208 [2024-11-19 11:14:28,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:14:28,531 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 97 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:28,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 614 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-19 11:14:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-19 11:14:28,538 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) [2024-11-19 11:14:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-11-19 11:14:28,539 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-11-19 11:14:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:28,540 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-11-19 11:14:28,540 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) [2024-11-19 11:14:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-11-19 11:14:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 11:14:28,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:28,541 INFO L215 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] [2024-11-19 11:14:28,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 11:14:28,541 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)] === [2024-11-19 11:14:28,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-11-19 11:14:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:28,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819884347] [2024-11-19 11:14:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:28,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:14:28,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:28,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819884347] [2024-11-19 11:14:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819884347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:28,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:28,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552520909] [2024-11-19 11:14:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:28,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:28,930 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) [2024-11-19 11:14:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:29,469 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-11-19 11:14:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:14:29,469 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 [2024-11-19 11:14:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:29,470 INFO L225 Difference]: With dead ends: 200 [2024-11-19 11:14:29,470 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 11:14:29,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:14:29,471 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-11-19 11:14:29,471 INFO L433 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] [2024-11-19 11:14:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 11:14:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-19 11:14:29,478 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) [2024-11-19 11:14:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-19 11:14:29,479 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-11-19 11:14:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:29,479 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-19 11:14:29,480 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) [2024-11-19 11:14:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-19 11:14:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 11:14:29,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:29,481 INFO L215 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] [2024-11-19 11:14:29,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 11:14:29,481 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)] === [2024-11-19 11:14:29,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-11-19 11:14:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:29,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586487615] [2024-11-19 11:14:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:29,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586487615] [2024-11-19 11:14:29,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586487615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:29,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575828337] [2024-11-19 11:14:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:29,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:29,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:29,622 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) [2024-11-19 11:14:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:29,710 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-11-19 11:14:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:29,710 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 [2024-11-19 11:14:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:29,712 INFO L225 Difference]: With dead ends: 185 [2024-11-19 11:14:29,713 INFO L226 Difference]: Without dead ends: 183 [2024-11-19 11:14:29,713 INFO L431 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 [2024-11-19 11:14:29,714 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-19 11:14:29,714 INFO L433 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] [2024-11-19 11:14:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-19 11:14:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-19 11:14:29,720 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) [2024-11-19 11:14:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-11-19 11:14:29,721 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-11-19 11:14:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:29,722 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-11-19 11:14:29,722 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) [2024-11-19 11:14:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-11-19 11:14:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 11:14:29,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:29,723 INFO L215 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] [2024-11-19 11:14:29,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 11:14:29,723 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)] === [2024-11-19 11:14:29,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-11-19 11:14:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008044201] [2024-11-19 11:14:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:29,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008044201] [2024-11-19 11:14:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008044201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:29,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755050160] [2024-11-19 11:14:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:29,864 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) [2024-11-19 11:14:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:29,962 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-11-19 11:14:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:29,962 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 [2024-11-19 11:14:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:29,963 INFO L225 Difference]: With dead ends: 204 [2024-11-19 11:14:29,963 INFO L226 Difference]: Without dead ends: 202 [2024-11-19 11:14:29,964 INFO L431 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 [2024-11-19 11:14:29,964 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-19 11:14:29,965 INFO L433 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] [2024-11-19 11:14:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-19 11:14:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-11-19 11:14:29,973 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) [2024-11-19 11:14:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-19 11:14:29,975 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-11-19 11:14:29,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:29,976 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-19 11:14:29,976 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) [2024-11-19 11:14:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-19 11:14:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 11:14:29,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:29,977 INFO L215 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] [2024-11-19 11:14:29,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 11:14:29,977 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)] === [2024-11-19 11:14:29,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-11-19 11:14:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000096556] [2024-11-19 11:14:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:29,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000096556] [2024-11-19 11:14:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000096556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:14:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232422769] [2024-11-19 11:14:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:30,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:14:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:14:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:14:30,083 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 5 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), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:14:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:30,184 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-11-19 11:14:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:14:30,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 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), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-19 11:14:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:30,186 INFO L225 Difference]: With dead ends: 187 [2024-11-19 11:14:30,186 INFO L226 Difference]: Without dead ends: 183 [2024-11-19 11:14:30,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:30,187 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 42 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:30,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 366 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:14:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-19 11:14:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-19 11:14:30,194 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) [2024-11-19 11:14:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-19 11:14:30,195 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-11-19 11:14:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:30,196 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-19 11:14:30,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:14:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-19 11:14:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 11:14:30,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:30,197 INFO L215 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] [2024-11-19 11:14:30,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 11:14:30,198 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)] === [2024-11-19 11:14:30,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-11-19 11:14:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:30,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214975863] [2024-11-19 11:14:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:30,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214975863] [2024-11-19 11:14:30,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214975863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:30,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:30,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699332517] [2024-11-19 11:14:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:30,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:30,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:30,503 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) [2024-11-19 11:14:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:30,662 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-11-19 11:14:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:14:30,662 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 [2024-11-19 11:14:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:30,663 INFO L225 Difference]: With dead ends: 195 [2024-11-19 11:14:30,663 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 11:14:30,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 11:14:30,665 INFO L432 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 [2024-11-19 11:14:30,666 INFO L433 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] [2024-11-19 11:14:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 11:14:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-11-19 11:14:30,676 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) [2024-11-19 11:14:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-19 11:14:30,677 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-11-19 11:14:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:30,677 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-19 11:14:30,677 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) [2024-11-19 11:14:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-19 11:14:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 11:14:30,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:30,678 INFO L215 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] [2024-11-19 11:14:30,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 11:14:30,679 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)] === [2024-11-19 11:14:30,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-11-19 11:14:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:30,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849512954] [2024-11-19 11:14:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849512954] [2024-11-19 11:14:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849512954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869565248] [2024-11-19 11:14:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:30,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:30,987 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) [2024-11-19 11:14:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:31,142 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-11-19 11:14:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:14:31,143 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 [2024-11-19 11:14:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:31,144 INFO L225 Difference]: With dead ends: 195 [2024-11-19 11:14:31,144 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 11:14:31,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 11:14:31,145 INFO L432 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 [2024-11-19 11:14:31,145 INFO L433 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] [2024-11-19 11:14:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 11:14:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-11-19 11:14:31,152 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) [2024-11-19 11:14:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-11-19 11:14:31,154 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-11-19 11:14:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:31,154 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-11-19 11:14:31,155 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) [2024-11-19 11:14:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-11-19 11:14:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 11:14:31,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:31,156 INFO L215 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] [2024-11-19 11:14:31,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 11:14:31,156 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)] === [2024-11-19 11:14:31,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-11-19 11:14:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:31,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031154816] [2024-11-19 11:14:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:31,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031154816] [2024-11-19 11:14:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031154816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441074998] [2024-11-19 11:14:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:31,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:31,448 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) [2024-11-19 11:14:31,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:14:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:31,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:14:31,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:31,560 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 [2024-11-19 11:14:31,786 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 [2024-11-19 11:14:31,802 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 [2024-11-19 11:14:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:31,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441074998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:31,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:14:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-19 11:14:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218940224] [2024-11-19 11:14:31,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:31,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 11:14:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 11:14:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:14:32,001 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 21 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 11:14:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:32,375 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions. [2024-11-19 11:14:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:14:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2024-11-19 11:14:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:32,377 INFO L225 Difference]: With dead ends: 188 [2024-11-19 11:14:32,377 INFO L226 Difference]: Without dead ends: 185 [2024-11-19 11:14:32,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-19 11:14:32,378 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 347 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:32,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1114 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:14:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-19 11:14:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2024-11-19 11:14:32,388 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) [2024-11-19 11:14:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-11-19 11:14:32,389 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-11-19 11:14:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:32,390 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-11-19 11:14:32,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 11:14:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-11-19 11:14:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 11:14:32,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:32,391 INFO L215 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] [2024-11-19 11:14:32,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 11:14:32,591 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 [2024-11-19 11:14:32,592 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)] === [2024-11-19 11:14:32,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-11-19 11:14:32,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:32,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88986285] [2024-11-19 11:14:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:32,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 11:14:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88986285] [2024-11-19 11:14:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88986285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038455550] [2024-11-19 11:14:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:32,871 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) [2024-11-19 11:14:32,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:14:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:33,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 11:14:33,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:33,322 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 23 treesize of output 15 [2024-11-19 11:14:33,514 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 [2024-11-19 11:14:33,583 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 [2024-11-19 11:14:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:33,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 11:14:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038455550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:34,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:14:34,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 11] total 30 [2024-11-19 11:14:34,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16235256] [2024-11-19 11:14:34,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:34,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 11:14:34,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 11:14:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2024-11-19 11:14:34,077 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 31 states, 29 states have (on average 4.517241379310345) internal successors, (131), 27 states have internal predecessors, (131), 12 states have call successors, (14), 7 states have call predecessors, (14), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-19 11:14:38,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:50,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:55,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:14:59,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:15:03,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:15:07,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:15:19,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:15:32,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:15:44,440 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]