./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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_ps4-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 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:17:50,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:17:50,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:17:50,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:17:50,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:17:50,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:17:50,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:17:50,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:17:50,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:17:50,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:17:50,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:17:50,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:17:50,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:17:50,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:17:50,932 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:17:50,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:17:50,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:17:50,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:17:50,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:17:50,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:17:50,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:17:50,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:17:50,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:17:50,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:17:50,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:17:50,938 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:17:50,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:17:50,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:17:50,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:17:50,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:17:50,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:17:50,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:17:50,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:17:50,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:17:50,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:50,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:17:50,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:17:50,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:17:50,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:17:50,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:17:50,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:17:50,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:17:50,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:17:50,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:17:50,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 [2024-11-09 12:17:51,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:17:51,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:17:51,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:17:51,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:17:51,257 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:17:51,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-11-09 12:17:52,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:17:52,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:17:52,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-11-09 12:17:52,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ded5a99e/709cad89e89343e498a05a1ef682842d/FLAG3c97cd1b3 [2024-11-09 12:17:52,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ded5a99e/709cad89e89343e498a05a1ef682842d [2024-11-09 12:17:52,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:17:52,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:17:53,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:53,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:17:53,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:17:53,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:52" (1/1) ... [2024-11-09 12:17:53,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae183d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53, skipping insertion in model container [2024-11-09 12:17:53,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:52" (1/1) ... [2024-11-09 12:17:53,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:17:53,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:53,268 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:17:53,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:53,313 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:17:53,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53 WrapperNode [2024-11-09 12:17:53,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:53,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:53,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:17:53,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:17:53,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,357 INFO L138 Inliner]: procedures = 16, calls = 64, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-11-09 12:17:53,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:53,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:17:53,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:17:53,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:17:53,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,398 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 3, 5, 27, 4]. 66 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]. [2024-11-09 12:17:53,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:17:53,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:17:53,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:17:53,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:17:53,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (1/1) ... [2024-11-09 12:17:53,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:53,443 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) [2024-11-09 12:17:53,445 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 [2024-11-09 12:17:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:17:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:17:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:17:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:17:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:17:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:17:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:17:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:17:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:17:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-09 12:17:53,490 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-09 12:17:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:17:53,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:17:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:17:53,577 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:17:53,579 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:17:54,666 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-11-09 12:17:54,667 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:17:54,686 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:17:54,690 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:17:54,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:54 BoogieIcfgContainer [2024-11-09 12:17:54,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:17:54,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:17:54,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:17:54,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:17:54,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:17:52" (1/3) ... [2024-11-09 12:17:54,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392c2d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:54, skipping insertion in model container [2024-11-09 12:17:54,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:53" (2/3) ... [2024-11-09 12:17:54,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392c2d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:54, skipping insertion in model container [2024-11-09 12:17:54,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:54" (3/3) ... [2024-11-09 12:17:54,701 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4-ll.c [2024-11-09 12:17:54,718 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:17:54,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-09 12:17:54,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:17:54,799 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;@7839f648, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:17:54,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-09 12:17:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 12:17:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 12:17:54,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:54,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 12:17:54,812 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:54,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash 894155113, now seen corresponding path program 1 times [2024-11-09 12:17:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215776725] [2024-11-09 12:17:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215776725] [2024-11-09 12:17:55,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215776725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:55,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:55,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924221061] [2024-11-09 12:17:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:55,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:55,337 INFO L87 Difference]: Start difference. First operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) 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) [2024-11-09 12:17:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:55,753 INFO L93 Difference]: Finished difference Result 370 states and 392 transitions. [2024-11-09 12:17:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:55,756 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 [2024-11-09 12:17:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:55,768 INFO L225 Difference]: With dead ends: 370 [2024-11-09 12:17:55,768 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 12:17:55,772 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 [2024-11-09 12:17:55,775 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:55,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 642 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:17:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 12:17:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 167. [2024-11-09 12:17:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 159 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-09 12:17:55,823 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 6 [2024-11-09 12:17:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:55,824 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-09 12:17:55,824 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) [2024-11-09 12:17:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-09 12:17:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:17:55,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:55,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:55,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:17:55,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:55,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash 289607755, now seen corresponding path program 1 times [2024-11-09 12:17:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065928646] [2024-11-09 12:17:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:55,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:55,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817126108] [2024-11-09 12:17:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:55,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:55,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:55,877 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) [2024-11-09 12:17:55,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:17:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:55,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 12:17:55,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:56,032 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 [2024-11-09 12:17:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:56,088 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065928646] [2024-11-09 12:17:56,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817126108] [2024-11-09 12:17:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817126108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:56,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:56,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544072125] [2024-11-09 12:17:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:56,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:56,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:56,096 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:56,549 INFO L93 Difference]: Finished difference Result 246 states and 251 transitions. [2024-11-09 12:17:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:56,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2024-11-09 12:17:56,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:56,552 INFO L225 Difference]: With dead ends: 246 [2024-11-09 12:17:56,552 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 12:17:56,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:56,555 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 172 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:56,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 534 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 12:17:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 167. [2024-11-09 12:17:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 159 states have internal predecessors, (174), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2024-11-09 12:17:56,578 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 8 [2024-11-09 12:17:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:56,578 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2024-11-09 12:17:56,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2024-11-09 12:17:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 12:17:56,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:56,580 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:56,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:17:56,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:56,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:56,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1987835121, now seen corresponding path program 1 times [2024-11-09 12:17:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685384156] [2024-11-09 12:17:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:56,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685384156] [2024-11-09 12:17:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685384156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:57,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760129448] [2024-11-09 12:17:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:57,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:57,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:57,392 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:58,145 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2024-11-09 12:17:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 12:17:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:58,147 INFO L225 Difference]: With dead ends: 216 [2024-11-09 12:17:58,147 INFO L226 Difference]: Without dead ends: 215 [2024-11-09 12:17:58,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:58,148 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 176 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:58,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 611 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:17:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-09 12:17:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-09 12:17:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7474747474747474) internal successors, (173), 159 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 184 transitions. [2024-11-09 12:17:58,160 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 184 transitions. Word has length 14 [2024-11-09 12:17:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:58,160 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 184 transitions. [2024-11-09 12:17:58,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 184 transitions. [2024-11-09 12:17:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 12:17:58,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:58,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:58,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:17:58,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:58,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1493346728, now seen corresponding path program 1 times [2024-11-09 12:17:58,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681790138] [2024-11-09 12:17:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494802413] [2024-11-09 12:17:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:58,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:58,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:58,185 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) [2024-11-09 12:17:58,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:17:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:58,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 12:17:58,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:58,280 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 [2024-11-09 12:17:58,287 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 [2024-11-09 12:17:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:58,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:58,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:58,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681790138] [2024-11-09 12:17:58,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494802413] [2024-11-09 12:17:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494802413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:58,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:58,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:17:58,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550881473] [2024-11-09 12:17:58,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:58,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:17:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:17:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:17:58,555 INFO L87 Difference]: Start difference. First operand 167 states and 184 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:59,243 INFO L93 Difference]: Finished difference Result 203 states and 208 transitions. [2024-11-09 12:17:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:17:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 12:17:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:59,247 INFO L225 Difference]: With dead ends: 203 [2024-11-09 12:17:59,247 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 12:17:59,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:17:59,250 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 202 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:59,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 629 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:17:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 12:17:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 167. [2024-11-09 12:17:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7373737373737375) internal successors, (172), 159 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2024-11-09 12:17:59,271 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 15 [2024-11-09 12:17:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:59,272 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2024-11-09 12:17:59,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2024-11-09 12:17:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 12:17:59,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:59,273 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:59,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:59,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 12:17:59,474 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:59,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash -950891565, now seen corresponding path program 1 times [2024-11-09 12:17:59,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:59,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521808891] [2024-11-09 12:17:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:59,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521808891] [2024-11-09 12:17:59,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521808891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:59,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:59,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809437625] [2024-11-09 12:17:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:59,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:59,637 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:59,934 INFO L93 Difference]: Finished difference Result 238 states and 243 transitions. [2024-11-09 12:17:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:59,934 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), 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 16 [2024-11-09 12:17:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:59,935 INFO L225 Difference]: With dead ends: 238 [2024-11-09 12:17:59,935 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 12:17:59,936 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 [2024-11-09 12:17:59,937 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 134 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:59,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 541 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:17:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 12:17:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 167. [2024-11-09 12:17:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6767676767676767) internal successors, (166), 159 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2024-11-09 12:17:59,946 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 16 [2024-11-09 12:17:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:59,946 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2024-11-09 12:17:59,946 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2024-11-09 12:17:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 12:17:59,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:59,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 12:17:59,948 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:17:59,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -95866759, now seen corresponding path program 1 times [2024-11-09 12:17:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159067302] [2024-11-09 12:17:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:59,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122483601] [2024-11-09 12:17:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:59,969 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) [2024-11-09 12:17:59,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:18:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 12:18:00,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:00,055 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 [2024-11-09 12:18:00,060 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 [2024-11-09 12:18:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:00,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159067302] [2024-11-09 12:18:00,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122483601] [2024-11-09 12:18:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122483601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102109914] [2024-11-09 12:18:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:00,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:00,245 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:00,832 INFO L93 Difference]: Finished difference Result 196 states and 201 transitions. [2024-11-09 12:18:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:00,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 12:18:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:00,833 INFO L225 Difference]: With dead ends: 196 [2024-11-09 12:18:00,833 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 12:18:00,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:00,835 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 120 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:00,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 635 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 12:18:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 167. [2024-11-09 12:18:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6565656565656566) internal successors, (164), 159 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2024-11-09 12:18:00,843 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 22 [2024-11-09 12:18:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:00,844 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2024-11-09 12:18:00,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2024-11-09 12:18:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 12:18:00,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:00,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:00,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 12:18:01,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:01,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1933637797, now seen corresponding path program 1 times [2024-11-09 12:18:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:01,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710594348] [2024-11-09 12:18:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124423703] [2024-11-09 12:18:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:01,071 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) [2024-11-09 12:18:01,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:18:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 12:18:01,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:01,161 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 [2024-11-09 12:18:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:01,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:01,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710594348] [2024-11-09 12:18:01,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:01,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124423703] [2024-11-09 12:18:01,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124423703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:01,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:01,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217723868] [2024-11-09 12:18:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:01,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:01,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:01,220 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:01,403 INFO L93 Difference]: Finished difference Result 230 states and 235 transitions. [2024-11-09 12:18:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:01,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 24 [2024-11-09 12:18:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:01,405 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:18:01,405 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 12:18:01,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:01,406 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:01,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 560 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 12:18:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2024-11-09 12:18:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6363636363636365) internal successors, (162), 159 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 173 transitions. [2024-11-09 12:18:01,413 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 173 transitions. Word has length 24 [2024-11-09 12:18:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:01,414 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 173 transitions. [2024-11-09 12:18:01,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 173 transitions. [2024-11-09 12:18:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:18:01,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:01,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:01,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:01,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:01,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1494920765, now seen corresponding path program 1 times [2024-11-09 12:18:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934885470] [2024-11-09 12:18:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024657291] [2024-11-09 12:18:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:01,640 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) [2024-11-09 12:18:01,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:18:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 12:18:01,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:01,744 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 [2024-11-09 12:18:01,750 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 [2024-11-09 12:18:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:02,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934885470] [2024-11-09 12:18:02,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024657291] [2024-11-09 12:18:02,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024657291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:02,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:02,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359599660] [2024-11-09 12:18:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:02,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:02,043 INFO L87 Difference]: Start difference. First operand 167 states and 173 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:02,812 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2024-11-09 12:18:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 26 [2024-11-09 12:18:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:02,814 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:18:02,814 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 12:18:02,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:18:02,815 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 100 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:02,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 619 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:18:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 12:18:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 167. [2024-11-09 12:18:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6262626262626263) internal successors, (161), 159 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2024-11-09 12:18:02,822 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 26 [2024-11-09 12:18:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:02,822 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2024-11-09 12:18:02,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2024-11-09 12:18:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 12:18:02,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:02,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:02,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:03,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:03,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash -902096396, now seen corresponding path program 1 times [2024-11-09 12:18:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115467758] [2024-11-09 12:18:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672098922] [2024-11-09 12:18:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:03,053 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) [2024-11-09 12:18:03,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:18:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:03,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:03,146 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 [2024-11-09 12:18:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115467758] [2024-11-09 12:18:03,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672098922] [2024-11-09 12:18:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672098922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:03,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:03,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871710075] [2024-11-09 12:18:03,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:03,285 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:03,663 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2024-11-09 12:18:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 27 [2024-11-09 12:18:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:03,665 INFO L225 Difference]: With dead ends: 227 [2024-11-09 12:18:03,665 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 12:18:03,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:03,666 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 101 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:03,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 615 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 12:18:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 167. [2024-11-09 12:18:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-11-09 12:18:03,675 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 27 [2024-11-09 12:18:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:03,675 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-11-09 12:18:03,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-11-09 12:18:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 12:18:03,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:03,677 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:03,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:03,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,879 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:03,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1528431989, now seen corresponding path program 1 times [2024-11-09 12:18:03,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:03,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202409370] [2024-11-09 12:18:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:18:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:04,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:04,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202409370] [2024-11-09 12:18:04,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202409370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:04,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:04,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046582771] [2024-11-09 12:18:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:04,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:04,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:04,094 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:04,180 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-09 12:18:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 35 [2024-11-09 12:18:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:04,182 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:18:04,182 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 12:18:04,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:04,183 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 93 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:04,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 673 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 12:18:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 168. [2024-11-09 12:18:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2024-11-09 12:18:04,191 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2024-11-09 12:18:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,191 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2024-11-09 12:18:04,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2024-11-09 12:18:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:18:04,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:04,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 12:18:04,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:04,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash 136751558, now seen corresponding path program 1 times [2024-11-09 12:18:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917818099] [2024-11-09 12:18:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:18:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:04,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917818099] [2024-11-09 12:18:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917818099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:04,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914701670] [2024-11-09 12:18:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:04,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:04,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:04,420 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:04,497 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-11-09 12:18:04,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 36 [2024-11-09 12:18:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:04,499 INFO L225 Difference]: With dead ends: 229 [2024-11-09 12:18:04,499 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 12:18:04,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:04,500 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 90 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:04,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 675 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:18:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 12:18:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 169. [2024-11-09 12:18:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.603960396039604) internal successors, (162), 161 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2024-11-09 12:18:04,509 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 36 [2024-11-09 12:18:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,510 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2024-11-09 12:18:04,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2024-11-09 12:18:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 12:18:04,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,512 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:04,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 12:18:04,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:04,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash -55668841, now seen corresponding path program 1 times [2024-11-09 12:18:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205630808] [2024-11-09 12:18:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:18:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205630808] [2024-11-09 12:18:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205630808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024269456] [2024-11-09 12:18:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:04,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:04,667 INFO L87 Difference]: Start difference. First operand 169 states and 173 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:04,797 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-09 12:18:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:04,798 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, (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 37 [2024-11-09 12:18:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:04,799 INFO L225 Difference]: With dead ends: 224 [2024-11-09 12:18:04,799 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 12:18:04,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:04,800 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 85 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:04,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 576 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 12:18:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 171. [2024-11-09 12:18:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.5922330097087378) internal successors, (164), 163 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2024-11-09 12:18:04,806 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 37 [2024-11-09 12:18:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,806 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2024-11-09 12:18:04,807 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2024-11-09 12:18:04,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:18:04,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:04,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:18:04,808 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:04,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1725942541, now seen corresponding path program 1 times [2024-11-09 12:18:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008400392] [2024-11-09 12:18:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148973659] [2024-11-09 12:18:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:04,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:04,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:18:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 12:18:04,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:04,924 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 [2024-11-09 12:18:04,927 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 [2024-11-09 12:18:04,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:05,339 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 19 treesize of output 11 [2024-11-09 12:18:05,358 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 [2024-11-09 12:18:05,363 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 [2024-11-09 12:18:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:05,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008400392] [2024-11-09 12:18:05,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148973659] [2024-11-09 12:18:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148973659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:05,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:05,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238082622] [2024-11-09 12:18:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:05,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:05,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:05,376 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:05,644 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-09 12:18:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:05,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-09 12:18:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:05,647 INFO L225 Difference]: With dead ends: 224 [2024-11-09 12:18:05,647 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 12:18:05,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:05,648 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 88 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:05,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 733 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 12:18:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 175. [2024-11-09 12:18:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.5754716981132075) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-11-09 12:18:05,655 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 38 [2024-11-09 12:18:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:05,656 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-11-09 12:18:05,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-11-09 12:18:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:18:05,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:05,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:05,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:05,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:05,860 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:05,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1964611181, now seen corresponding path program 1 times [2024-11-09 12:18:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:05,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245231421] [2024-11-09 12:18:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:05,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095351595] [2024-11-09 12:18:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:05,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:05,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:05,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:05,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:18:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:05,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 12:18:05,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:05,995 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 [2024-11-09 12:18:05,998 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 [2024-11-09 12:18:06,004 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 [2024-11-09 12:18:06,351 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 19 treesize of output 11 [2024-11-09 12:18:06,363 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 [2024-11-09 12:18:06,366 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 [2024-11-09 12:18:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:06,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245231421] [2024-11-09 12:18:06,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095351595] [2024-11-09 12:18:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095351595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:06,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:06,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:06,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939820211] [2024-11-09 12:18:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:06,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:06,378 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:06,639 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-11-09 12:18:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:06,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-11-09 12:18:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:06,640 INFO L225 Difference]: With dead ends: 223 [2024-11-09 12:18:06,641 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 12:18:06,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:06,642 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 112 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:06,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 563 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 12:18:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2024-11-09 12:18:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 166 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2024-11-09 12:18:06,648 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 39 [2024-11-09 12:18:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:06,648 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2024-11-09 12:18:06,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2024-11-09 12:18:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:18:06,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:06,664 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:06,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 12:18:06,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 12:18:06,869 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_26_to_34_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:06,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1958143559, now seen corresponding path program 1 times [2024-11-09 12:18:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871445544] [2024-11-09 12:18:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113207548] [2024-11-09 12:18:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:06,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:06,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:06,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 12:18:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:06,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:06,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:07,000 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 [2024-11-09 12:18:07,113 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 26 treesize of output 14 [2024-11-09 12:18:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:07,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:07,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871445544] [2024-11-09 12:18:07,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113207548] [2024-11-09 12:18:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113207548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:07,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:07,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485961581] [2024-11-09 12:18:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:07,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:07,132 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:07,303 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2024-11-09 12:18:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:07,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 39 [2024-11-09 12:18:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:07,304 INFO L225 Difference]: With dead ends: 224 [2024-11-09 12:18:07,305 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 12:18:07,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:18:07,305 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 221 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:07,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 451 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 12:18:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 174. [2024-11-09 12:18:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.5514018691588785) internal successors, (166), 164 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2024-11-09 12:18:07,316 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 39 [2024-11-09 12:18:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:07,316 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2024-11-09 12:18:07,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2024-11-09 12:18:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:18:07,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:07,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:07,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:07,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 12:18:07,518 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:07,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -773404427, now seen corresponding path program 1 times [2024-11-09 12:18:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014972465] [2024-11-09 12:18:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:07,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539685520] [2024-11-09 12:18:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:07,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:07,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:07,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:07,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 12:18:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:07,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:18:07,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:07,640 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 [2024-11-09 12:18:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:07,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:07,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:07,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014972465] [2024-11-09 12:18:07,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539685520] [2024-11-09 12:18:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539685520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:18:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662883177] [2024-11-09 12:18:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:07,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:18:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:18:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:18:07,690 INFO L87 Difference]: Start difference. First operand 174 states and 178 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, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:07,854 INFO L93 Difference]: Finished difference Result 220 states and 225 transitions. [2024-11-09 12:18:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:18:07,855 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, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-09 12:18:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:07,856 INFO L225 Difference]: With dead ends: 220 [2024-11-09 12:18:07,856 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 12:18:07,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:07,857 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:07,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 374 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:07,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 12:18:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 176. [2024-11-09 12:18:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 166 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2024-11-09 12:18:07,864 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 40 [2024-11-09 12:18:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:07,864 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2024-11-09 12:18:07,864 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, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2024-11-09 12:18:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:18:07,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:07,865 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:07,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:08,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 12:18:08,070 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:08,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash -572908022, now seen corresponding path program 1 times [2024-11-09 12:18:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898655793] [2024-11-09 12:18:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:08,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036615284] [2024-11-09 12:18:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:08,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:08,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:08,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 12:18:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:08,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:08,203 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 [2024-11-09 12:18:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:08,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:08,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898655793] [2024-11-09 12:18:08,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036615284] [2024-11-09 12:18:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036615284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954685433] [2024-11-09 12:18:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:08,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:08,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:08,319 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:08,497 INFO L93 Difference]: Finished difference Result 237 states and 244 transitions. [2024-11-09 12:18:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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 40 [2024-11-09 12:18:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:08,511 INFO L225 Difference]: With dead ends: 237 [2024-11-09 12:18:08,511 INFO L226 Difference]: Without dead ends: 236 [2024-11-09 12:18:08,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:08,512 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 92 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:08,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 613 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-09 12:18:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 185. [2024-11-09 12:18:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 174 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 191 transitions. [2024-11-09 12:18:08,523 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 191 transitions. Word has length 40 [2024-11-09 12:18:08,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:08,523 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 191 transitions. [2024-11-09 12:18:08,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 191 transitions. [2024-11-09 12:18:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 12:18:08,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:08,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:08,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 12:18:08,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 12:18:08,725 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:08,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -580279333, now seen corresponding path program 1 times [2024-11-09 12:18:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202562055] [2024-11-09 12:18:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745998782] [2024-11-09 12:18:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:08,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:08,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 12:18:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:08,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:08,859 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 [2024-11-09 12:18:08,948 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 25 treesize of output 13 [2024-11-09 12:18:08,971 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 29 treesize of output 13 [2024-11-09 12:18:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:08,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:08,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202562055] [2024-11-09 12:18:08,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745998782] [2024-11-09 12:18:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745998782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:08,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822718893] [2024-11-09 12:18:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:08,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:08,989 INFO L87 Difference]: Start difference. First operand 185 states and 191 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,217 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2024-11-09 12:18:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:18:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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 41 [2024-11-09 12:18:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,218 INFO L225 Difference]: With dead ends: 226 [2024-11-09 12:18:09,218 INFO L226 Difference]: Without dead ends: 225 [2024-11-09 12:18:09,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:09,219 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 214 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 549 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-09 12:18:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2024-11-09 12:18:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 173 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 190 transitions. [2024-11-09 12:18:09,230 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 190 transitions. Word has length 41 [2024-11-09 12:18:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,230 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 190 transitions. [2024-11-09 12:18:09,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 190 transitions. [2024-11-09 12:18:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:18:09,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:09,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 12:18:09,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 12:18:09,436 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:09,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -212310793, now seen corresponding path program 1 times [2024-11-09 12:18:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234042441] [2024-11-09 12:18:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:09,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86086466] [2024-11-09 12:18:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:09,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:09,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 12:18:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 12:18:09,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:09,592 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 [2024-11-09 12:18:09,596 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 [2024-11-09 12:18:09,644 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 7 treesize of output 3 [2024-11-09 12:18:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:09,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234042441] [2024-11-09 12:18:09,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86086466] [2024-11-09 12:18:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86086466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764130863] [2024-11-09 12:18:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:09,671 INFO L87 Difference]: Start difference. First operand 184 states and 190 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,873 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2024-11-09 12:18:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-09 12:18:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,874 INFO L225 Difference]: With dead ends: 223 [2024-11-09 12:18:09,874 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 12:18:09,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:09,875 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 75 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 468 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 12:18:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 184. [2024-11-09 12:18:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.5) internal successors, (174), 173 states have internal predecessors, (174), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 188 transitions. [2024-11-09 12:18:09,884 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 188 transitions. Word has length 42 [2024-11-09 12:18:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,884 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 188 transitions. [2024-11-09 12:18:09,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 188 transitions. [2024-11-09 12:18:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:18:09,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,885 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:09,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:10,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:10,090 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:10,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash -808789972, now seen corresponding path program 1 times [2024-11-09 12:18:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033195944] [2024-11-09 12:18:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178477566] [2024-11-09 12:18:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:10,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:10,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 12:18:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:10,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 12:18:10,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:10,239 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 [2024-11-09 12:18:10,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:10,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:10,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033195944] [2024-11-09 12:18:10,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:10,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178477566] [2024-11-09 12:18:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178477566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771465819] [2024-11-09 12:18:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:10,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:10,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:10,385 INFO L87 Difference]: Start difference. First operand 184 states and 188 transitions. Second operand has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:10,684 INFO L93 Difference]: Finished difference Result 234 states and 239 transitions. [2024-11-09 12:18:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 42 [2024-11-09 12:18:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:10,686 INFO L225 Difference]: With dead ends: 234 [2024-11-09 12:18:10,686 INFO L226 Difference]: Without dead ends: 233 [2024-11-09 12:18:10,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:10,687 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 92 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:10,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 678 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-09 12:18:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 186. [2024-11-09 12:18:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 175 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2024-11-09 12:18:10,696 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 42 [2024-11-09 12:18:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:10,696 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2024-11-09 12:18:10,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2024-11-09 12:18:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 12:18:10,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:10,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:10,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 12:18:10,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:10,901 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:10,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash 697314813, now seen corresponding path program 1 times [2024-11-09 12:18:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422857694] [2024-11-09 12:18:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:18:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:11,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:11,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422857694] [2024-11-09 12:18:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422857694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:11,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:11,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097300515] [2024-11-09 12:18:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:11,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:11,093 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:11,565 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2024-11-09 12:18:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:11,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 43 [2024-11-09 12:18:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:11,568 INFO L225 Difference]: With dead ends: 191 [2024-11-09 12:18:11,568 INFO L226 Difference]: Without dead ends: 190 [2024-11-09 12:18:11,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:11,569 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 51 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:11,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 742 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-09 12:18:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-11-09 12:18:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.4873949579831933) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-11-09 12:18:11,580 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 43 [2024-11-09 12:18:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:11,580 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-11-09 12:18:11,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-11-09 12:18:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 12:18:11,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:11,580 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:11,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 12:18:11,581 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:11,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 141922894, now seen corresponding path program 1 times [2024-11-09 12:18:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722030103] [2024-11-09 12:18:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:18:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722030103] [2024-11-09 12:18:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722030103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028715378] [2024-11-09 12:18:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:11,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:11,997 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:12,353 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2024-11-09 12:18:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 44 [2024-11-09 12:18:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:12,355 INFO L225 Difference]: With dead ends: 190 [2024-11-09 12:18:12,355 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 12:18:12,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:12,356 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 48 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:12,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 628 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 12:18:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-09 12:18:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.4833333333333334) internal successors, (178), 177 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2024-11-09 12:18:12,363 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 44 [2024-11-09 12:18:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:12,363 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2024-11-09 12:18:12,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2024-11-09 12:18:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 12:18:12,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:12,364 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-09 12:18:12,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 12:18:12,364 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:12,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:12,365 INFO L85 PathProgramCache]: Analyzing trace with hash -738016019, now seen corresponding path program 1 times [2024-11-09 12:18:12,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:12,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709304485] [2024-11-09 12:18:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30300229] [2024-11-09 12:18:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:12,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:12,387 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:12,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 12:18:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:12,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 12:18:12,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:12,510 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 [2024-11-09 12:18:12,514 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 [2024-11-09 12:18:12,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:12,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:12,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709304485] [2024-11-09 12:18:13,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30300229] [2024-11-09 12:18:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30300229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:13,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-09 12:18:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115985181] [2024-11-09 12:18:13,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:13,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 12:18:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 12:18:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-09 12:18:13,393 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:19,714 INFO L93 Difference]: Finished difference Result 374 states and 384 transitions. [2024-11-09 12:18:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 12:18:19,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-09 12:18:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:19,717 INFO L225 Difference]: With dead ends: 374 [2024-11-09 12:18:19,717 INFO L226 Difference]: Without dead ends: 371 [2024-11-09 12:18:19,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:18:19,719 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 724 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:19,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1687 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 12:18:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-09 12:18:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 262. [2024-11-09 12:18:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 186 states have (on average 1.575268817204301) internal successors, (293), 245 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-09 12:18:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 319 transitions. [2024-11-09 12:18:19,735 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 319 transitions. Word has length 48 [2024-11-09 12:18:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:19,735 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 319 transitions. [2024-11-09 12:18:19,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 319 transitions. [2024-11-09 12:18:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:18:19,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:19,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:19,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 12:18:19,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:19,941 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:19,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1066854839, now seen corresponding path program 1 times [2024-11-09 12:18:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:19,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959159207] [2024-11-09 12:18:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:19,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:20,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:20,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 12:18:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:20,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 12:18:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959159207] [2024-11-09 12:18:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959159207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:20,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:20,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778974355] [2024-11-09 12:18:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:20,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:20,122 INFO L87 Difference]: Start difference. First operand 262 states and 319 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:18:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:20,771 INFO L93 Difference]: Finished difference Result 301 states and 363 transitions. [2024-11-09 12:18:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2024-11-09 12:18:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:20,773 INFO L225 Difference]: With dead ends: 301 [2024-11-09 12:18:20,773 INFO L226 Difference]: Without dead ends: 299 [2024-11-09 12:18:20,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:20,774 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:20,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 397 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:18:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-09 12:18:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 265. [2024-11-09 12:18:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.566137566137566) internal successors, (296), 247 states have internal predecessors, (296), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-09 12:18:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 322 transitions. [2024-11-09 12:18:20,788 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 322 transitions. Word has length 50 [2024-11-09 12:18:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:20,788 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 322 transitions. [2024-11-09 12:18:20,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:18:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 322 transitions. [2024-11-09 12:18:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:18:20,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:20,789 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:20,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 12:18:20,790 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:20,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -563787057, now seen corresponding path program 1 times [2024-11-09 12:18:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:20,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753445042] [2024-11-09 12:18:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049778978] [2024-11-09 12:18:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:20,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:20,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:20,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 12:18:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:20,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 12:18:20,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:20,956 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 [2024-11-09 12:18:21,035 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 [2024-11-09 12:18:21,066 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 [2024-11-09 12:18:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:21,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753445042] [2024-11-09 12:18:21,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:21,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049778978] [2024-11-09 12:18:21,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049778978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:21,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-09 12:18:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252471935] [2024-11-09 12:18:21,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:21,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:18:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:18:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:18:21,221 INFO L87 Difference]: Start difference. First operand 265 states and 322 transitions. Second operand has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:21,934 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2024-11-09 12:18:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 12:18:21,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-09 12:18:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:21,936 INFO L225 Difference]: With dead ends: 299 [2024-11-09 12:18:21,936 INFO L226 Difference]: Without dead ends: 298 [2024-11-09 12:18:21,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-09 12:18:21,937 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 433 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:21,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 868 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:18:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-09 12:18:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 266. [2024-11-09 12:18:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 190 states have (on average 1.5473684210526315) internal successors, (294), 247 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 322 transitions. [2024-11-09 12:18:21,952 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 322 transitions. Word has length 50 [2024-11-09 12:18:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:21,952 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 322 transitions. [2024-11-09 12:18:21,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 322 transitions. [2024-11-09 12:18:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:18:21,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:21,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:21,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 12:18:22,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 12:18:22,155 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:22,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -297529474, now seen corresponding path program 1 times [2024-11-09 12:18:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717720291] [2024-11-09 12:18:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:22,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791034044] [2024-11-09 12:18:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:22,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:22,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:22,184 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:22,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 12:18:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:22,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 12:18:22,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:22,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:22,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:22,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:23,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717720291] [2024-11-09 12:18:23,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:23,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791034044] [2024-11-09 12:18:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791034044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:23,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:23,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2024-11-09 12:18:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193125987] [2024-11-09 12:18:23,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:23,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 12:18:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 12:18:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-09 12:18:23,125 INFO L87 Difference]: Start difference. First operand 266 states and 322 transitions. Second operand has 20 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:25,049 INFO L93 Difference]: Finished difference Result 357 states and 368 transitions. [2024-11-09 12:18:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 12:18:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-09 12:18:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:25,051 INFO L225 Difference]: With dead ends: 357 [2024-11-09 12:18:25,052 INFO L226 Difference]: Without dead ends: 355 [2024-11-09 12:18:25,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-11-09 12:18:25,052 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 585 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:25,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1186 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 12:18:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-09 12:18:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 266. [2024-11-09 12:18:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 190 states have (on average 1.5315789473684212) internal successors, (291), 247 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 319 transitions. [2024-11-09 12:18:25,067 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 319 transitions. Word has length 51 [2024-11-09 12:18:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:25,067 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 319 transitions. [2024-11-09 12:18:25,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 319 transitions. [2024-11-09 12:18:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:18:25,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:25,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:25,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 12:18:25,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 12:18:25,269 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:25,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1249681799, now seen corresponding path program 1 times [2024-11-09 12:18:25,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:25,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212220579] [2024-11-09 12:18:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:25,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600741801] [2024-11-09 12:18:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:25,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:25,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:25,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 12:18:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:25,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:18:25,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:25,400 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 [2024-11-09 12:18:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:25,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212220579] [2024-11-09 12:18:25,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600741801] [2024-11-09 12:18:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600741801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253949177] [2024-11-09 12:18:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:25,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:25,480 INFO L87 Difference]: Start difference. First operand 266 states and 319 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:18:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:25,787 INFO L93 Difference]: Finished difference Result 306 states and 358 transitions. [2024-11-09 12:18:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2024-11-09 12:18:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:25,789 INFO L225 Difference]: With dead ends: 306 [2024-11-09 12:18:25,789 INFO L226 Difference]: Without dead ends: 300 [2024-11-09 12:18:25,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:25,790 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 130 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:25,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 450 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-09 12:18:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 272. [2024-11-09 12:18:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 196 states have (on average 1.5153061224489797) internal successors, (297), 253 states have internal predecessors, (297), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 325 transitions. [2024-11-09 12:18:25,803 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 325 transitions. Word has length 52 [2024-11-09 12:18:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:25,803 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 325 transitions. [2024-11-09 12:18:25,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:18:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 325 transitions. [2024-11-09 12:18:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:18:25,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:25,804 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:25,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:26,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 12:18:26,005 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:26,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash -633478991, now seen corresponding path program 1 times [2024-11-09 12:18:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202624249] [2024-11-09 12:18:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202832636] [2024-11-09 12:18:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:26,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:26,025 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:26,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 12:18:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:26,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 12:18:26,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:26,177 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 [2024-11-09 12:18:26,273 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 [2024-11-09 12:18:26,335 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 29 treesize of output 13 [2024-11-09 12:18:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:26,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202624249] [2024-11-09 12:18:26,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202832636] [2024-11-09 12:18:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202832636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:26,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:26,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-09 12:18:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042046222] [2024-11-09 12:18:26,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:26,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 12:18:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 12:18:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:18:26,759 INFO L87 Difference]: Start difference. First operand 272 states and 325 transitions. Second operand has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:28,623 INFO L93 Difference]: Finished difference Result 292 states and 345 transitions. [2024-11-09 12:18:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 12:18:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-09 12:18:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:28,625 INFO L225 Difference]: With dead ends: 292 [2024-11-09 12:18:28,625 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 12:18:28,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-09 12:18:28,626 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 492 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:28,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 848 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 12:18:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 12:18:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 271. [2024-11-09 12:18:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.5) internal successors, (294), 252 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2024-11-09 12:18:28,641 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 52 [2024-11-09 12:18:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:28,642 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2024-11-09 12:18:28,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2024-11-09 12:18:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 12:18:28,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:28,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:28,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:28,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:28,847 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:28,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1836987872, now seen corresponding path program 1 times [2024-11-09 12:18:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:28,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036186686] [2024-11-09 12:18:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367016863] [2024-11-09 12:18:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:28,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:28,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:28,868 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:28,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 12:18:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:28,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 12:18:29,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:29,003 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 [2024-11-09 12:18:29,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:29,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:34,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036186686] [2024-11-09 12:18:34,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367016863] [2024-11-09 12:18:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367016863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:34,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:18:34,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-09 12:18:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140040091] [2024-11-09 12:18:34,783 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:34,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:18:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:18:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=220, Unknown=1, NotChecked=0, Total=272 [2024-11-09 12:18:34,784 INFO L87 Difference]: Start difference. First operand 271 states and 322 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:35,315 INFO L93 Difference]: Finished difference Result 318 states and 349 transitions. [2024-11-09 12:18:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:18:35,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-11-09 12:18:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:35,317 INFO L225 Difference]: With dead ends: 318 [2024-11-09 12:18:35,317 INFO L226 Difference]: Without dead ends: 317 [2024-11-09 12:18:35,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=100, Invalid=361, Unknown=1, NotChecked=0, Total=462 [2024-11-09 12:18:35,318 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 260 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:35,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 663 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-09 12:18:35,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 271. [2024-11-09 12:18:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.4948979591836735) internal successors, (293), 252 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 321 transitions. [2024-11-09 12:18:35,337 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 321 transitions. Word has length 53 [2024-11-09 12:18:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 321 transitions. [2024-11-09 12:18:35,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 321 transitions. [2024-11-09 12:18:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 12:18:35,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:35,338 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:35,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:35,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 12:18:35,539 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:35,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1112049299, now seen corresponding path program 1 times [2024-11-09 12:18:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181818010] [2024-11-09 12:18:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339256668] [2024-11-09 12:18:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:35,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:35,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 12:18:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:35,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 12:18:35,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:35,710 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 [2024-11-09 12:18:35,799 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 25 treesize of output 13 [2024-11-09 12:18:35,879 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 36 treesize of output 16 [2024-11-09 12:18:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:35,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181818010] [2024-11-09 12:18:41,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339256668] [2024-11-09 12:18:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339256668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:41,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-09 12:18:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168621826] [2024-11-09 12:18:41,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:41,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 12:18:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 12:18:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=277, Unknown=1, NotChecked=0, Total=342 [2024-11-09 12:18:41,150 INFO L87 Difference]: Start difference. First operand 271 states and 321 transitions. Second operand has 19 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:46,910 INFO L93 Difference]: Finished difference Result 291 states and 341 transitions. [2024-11-09 12:18:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 12:18:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-09 12:18:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:46,911 INFO L225 Difference]: With dead ends: 291 [2024-11-09 12:18:46,911 INFO L226 Difference]: Without dead ends: 290 [2024-11-09 12:18:46,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=206, Invalid=663, Unknown=1, NotChecked=0, Total=870 [2024-11-09 12:18:46,912 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 423 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:46,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 875 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 12:18:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-09 12:18:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2024-11-09 12:18:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.4795918367346939) internal successors, (290), 251 states have internal predecessors, (290), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 318 transitions. [2024-11-09 12:18:46,926 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 318 transitions. Word has length 54 [2024-11-09 12:18:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:46,926 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 318 transitions. [2024-11-09 12:18:46,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 318 transitions. [2024-11-09 12:18:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 12:18:46,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:46,927 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:46,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:47,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:47,132 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:47,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash 113790018, now seen corresponding path program 1 times [2024-11-09 12:18:47,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:47,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161095598] [2024-11-09 12:18:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971768265] [2024-11-09 12:18:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:47,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:47,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:47,152 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:47,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 12:18:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:47,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 12:18:47,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:47,305 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 [2024-11-09 12:18:47,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:47,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:49,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161095598] [2024-11-09 12:18:49,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971768265] [2024-11-09 12:18:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971768265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:49,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:18:49,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-09 12:18:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295552477] [2024-11-09 12:18:49,941 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:49,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 12:18:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 12:18:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:18:49,943 INFO L87 Difference]: Start difference. First operand 270 states and 318 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:50,769 INFO L93 Difference]: Finished difference Result 315 states and 345 transitions. [2024-11-09 12:18:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:18:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-09 12:18:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:50,770 INFO L225 Difference]: With dead ends: 315 [2024-11-09 12:18:50,770 INFO L226 Difference]: Without dead ends: 314 [2024-11-09 12:18:50,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-09 12:18:50,771 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 187 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:50,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 929 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-09 12:18:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2024-11-09 12:18:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 251 states have internal predecessors, (289), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:18:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 317 transitions. [2024-11-09 12:18:50,785 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 317 transitions. Word has length 55 [2024-11-09 12:18:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:50,785 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 317 transitions. [2024-11-09 12:18:50,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 317 transitions. [2024-11-09 12:18:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 12:18:50,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:50,786 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:50,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:50,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:50,987 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:18:50,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -767476619, now seen corresponding path program 1 times [2024-11-09 12:18:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:50,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950978975] [2024-11-09 12:18:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118932123] [2024-11-09 12:18:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:51,014 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:51,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 12:18:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 12:18:51,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:51,168 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 [2024-11-09 12:18:51,173 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 [2024-11-09 12:18:51,361 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 [2024-11-09 12:18:51,387 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 29 treesize of output 13 [2024-11-09 12:18:51,449 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 34 treesize of output 3 [2024-11-09 12:18:51,561 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 18 treesize of output 10 [2024-11-09 12:18:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:52,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950978975] [2024-11-09 12:19:09,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118932123] [2024-11-09 12:19:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118932123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:19:09,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:19:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-09 12:19:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094822292] [2024-11-09 12:19:09,244 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:09,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 12:19:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 12:19:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=432, Unknown=3, NotChecked=0, Total=506 [2024-11-09 12:19:09,245 INFO L87 Difference]: Start difference. First operand 270 states and 317 transitions. Second operand has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:19:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:11,047 INFO L93 Difference]: Finished difference Result 317 states and 344 transitions. [2024-11-09 12:19:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 12:19:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-09 12:19:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:11,049 INFO L225 Difference]: With dead ends: 317 [2024-11-09 12:19:11,049 INFO L226 Difference]: Without dead ends: 316 [2024-11-09 12:19:11,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=159, Invalid=768, Unknown=3, NotChecked=0, Total=930 [2024-11-09 12:19:11,050 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 243 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:11,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1068 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 12:19:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-09 12:19:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 270. [2024-11-09 12:19:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.469387755102041) internal successors, (288), 251 states have internal predecessors, (288), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-09 12:19:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 316 transitions. [2024-11-09 12:19:11,063 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 316 transitions. Word has length 56 [2024-11-09 12:19:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:11,063 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 316 transitions. [2024-11-09 12:19:11,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:19:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 316 transitions. [2024-11-09 12:19:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 12:19:11,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:11,064 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:11,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 12:19:11,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:11,265 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 12:19:11,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1978028708, now seen corresponding path program 1 times [2024-11-09 12:19:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933547402] [2024-11-09 12:19:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046443245] [2024-11-09 12:19:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:11,289 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:11,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 12:19:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:11,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 12:19:11,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:11,452 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 [2024-11-09 12:19:11,459 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 [2024-11-09 12:19:11,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:19:11,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:19:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:19:11,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:19:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933547402] [2024-11-09 12:19:13,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046443245] [2024-11-09 12:19:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046443245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:19:13,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:19:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-09 12:19:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518606053] [2024-11-09 12:19:13,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:13,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 12:19:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 12:19:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-09 12:19:13,086 INFO L87 Difference]: Start difference. First operand 270 states and 316 transitions. Second operand has 29 states, 26 states have (on average 4.038461538461538) internal successors, (105), 25 states have internal predecessors, (105), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)