./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-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 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:15:33,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:15:33,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:15:33,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:15:33,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:15:33,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:15:33,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:15:33,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:15:33,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:15:33,383 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:15:33,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:15:33,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:15:33,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:15:33,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:15:33,384 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:15:33,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:15:33,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:15:33,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:15:33,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:15:33,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:15:33,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:15:33,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:15:33,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:15:33,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:15:33,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:15:33,393 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:15:33,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:15:33,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:15:33,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:15:33,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:15:33,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:15:33,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:15:33,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:33,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:15:33,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:15:33,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:15:33,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:15:33,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:15:33,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe [2024-10-14 21:15:33,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:15:33,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:15:33,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:15:33,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:15:33,588 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:15:33,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-10-14 21:15:34,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:15:35,023 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:15:35,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-10-14 21:15:35,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ef99463/71278dbe61ee4ab7b6d6a15aea62be34/FLAG79f0cca12 [2024-10-14 21:15:35,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ef99463/71278dbe61ee4ab7b6d6a15aea62be34 [2024-10-14 21:15:35,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:15:35,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:15:35,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:35,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:15:35,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:15:35,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4a443e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35, skipping insertion in model container [2024-10-14 21:15:35,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:15:35,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:35,193 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:15:35,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:35,233 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:15:35,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35 WrapperNode [2024-10-14 21:15:35,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:35,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:35,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:15:35,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:15:35,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,286 INFO L138 Inliner]: procedures = 16, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-10-14 21:15:35,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:35,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:15:35,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:15:35,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:15:35,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,327 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 4, 36, 4, 5]. 71 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, 2, 2, 1, 2]. [2024-10-14 21:15:35,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:15:35,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:15:35,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:15:35,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:15:35,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (1/1) ... [2024-10-14 21:15:35,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:35,392 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) [2024-10-14 21:15:35,394 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 [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:15:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:15:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:15:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:15:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:15:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:15:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:15:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-10-14 21:15:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-10-14 21:15:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:15:35,496 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:15:35,498 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:15:36,783 INFO L? ?]: Removed 370 outVars from TransFormulas that were not future-live. [2024-10-14 21:15:36,784 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:15:36,809 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:15:36,810 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 21:15:36,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:36 BoogieIcfgContainer [2024-10-14 21:15:36,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:15:36,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:15:36,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:15:36,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:15:36,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:15:35" (1/3) ... [2024-10-14 21:15:36,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56462a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:36, skipping insertion in model container [2024-10-14 21:15:36,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:35" (2/3) ... [2024-10-14 21:15:36,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56462a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:36, skipping insertion in model container [2024-10-14 21:15:36,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:36" (3/3) ... [2024-10-14 21:15:36,821 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5-ll.c [2024-10-14 21:15:36,833 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:15:36,833 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-10-14 21:15:36,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:15:36,894 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;@3f4ae64b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:15:36,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-10-14 21:15:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 183 states have internal predecessors, (186), 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) [2024-10-14 21:15:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:15:36,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:36,907 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:36,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:36,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash -274385286, now seen corresponding path program 1 times [2024-10-14 21:15:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194177296] [2024-10-14 21:15:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194177296] [2024-10-14 21:15:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194177296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 21:15:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488289635] [2024-10-14 21:15:37,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:37,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 21:15:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 21:15:37,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:15:37,086 INFO L87 Difference]: Start difference. First operand has 190 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 183 states have internal predecessors, (186), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:37,120 INFO L93 Difference]: Finished difference Result 378 states and 394 transitions. [2024-10-14 21:15:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 21:15:37,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 21:15:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:37,141 INFO L225 Difference]: With dead ends: 378 [2024-10-14 21:15:37,141 INFO L226 Difference]: Without dead ends: 187 [2024-10-14 21:15:37,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:15:37,147 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:37,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:15:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-14 21:15:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-10-14 21:15:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 97 states have (on average 1.865979381443299) internal successors, (181), 181 states have internal predecessors, (181), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 21:15:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2024-10-14 21:15:37,194 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 7 [2024-10-14 21:15:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:37,195 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2024-10-14 21:15:37,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2024-10-14 21:15:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:15:37,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:37,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:37,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:15:37,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:37,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:37,196 INFO L85 PathProgramCache]: Analyzing trace with hash -217126984, now seen corresponding path program 1 times [2024-10-14 21:15:37,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297792079] [2024-10-14 21:15:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:37,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:37,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297792079] [2024-10-14 21:15:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297792079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:37,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552067709] [2024-10-14 21:15:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:37,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:37,463 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:38,023 INFO L93 Difference]: Finished difference Result 345 states and 350 transitions. [2024-10-14 21:15:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:38,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 21:15:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:38,028 INFO L225 Difference]: With dead ends: 345 [2024-10-14 21:15:38,028 INFO L226 Difference]: Without dead ends: 335 [2024-10-14 21:15:38,029 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 [2024-10-14 21:15:38,030 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 264 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:38,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 695 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-10-14 21:15:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 228. [2024-10-14 21:15:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.8014705882352942) internal successors, (245), 220 states have internal predecessors, (245), 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) [2024-10-14 21:15:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 256 transitions. [2024-10-14 21:15:38,049 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 256 transitions. Word has length 7 [2024-10-14 21:15:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:38,049 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 256 transitions. [2024-10-14 21:15:38,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 256 transitions. [2024-10-14 21:15:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 21:15:38,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:38,050 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:38,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 21:15:38,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_35_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:38,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1825196994, now seen corresponding path program 1 times [2024-10-14 21:15:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906793516] [2024-10-14 21:15:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906793516] [2024-10-14 21:15:38,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906793516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:38,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773604723] [2024-10-14 21:15:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:38,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:38,221 INFO L87 Difference]: Start difference. First operand 228 states and 256 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-14 21:15:38,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:38,635 INFO L93 Difference]: Finished difference Result 335 states and 340 transitions. [2024-10-14 21:15:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:38,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 17 [2024-10-14 21:15:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:38,637 INFO L225 Difference]: With dead ends: 335 [2024-10-14 21:15:38,637 INFO L226 Difference]: Without dead ends: 327 [2024-10-14 21:15:38,637 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 [2024-10-14 21:15:38,638 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 220 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:38,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 694 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:15:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-14 21:15:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 228. [2024-10-14 21:15:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 220 states have internal predecessors, (237), 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) [2024-10-14 21:15:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 248 transitions. [2024-10-14 21:15:38,655 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 248 transitions. Word has length 17 [2024-10-14 21:15:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:38,656 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 248 transitions. [2024-10-14 21:15:38,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-14 21:15:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 248 transitions. [2024-10-14 21:15:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 21:15:38,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:38,657 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] [2024-10-14 21:15:38,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 21:15:38,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_35_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:38,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:38,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1829841866, now seen corresponding path program 1 times [2024-10-14 21:15:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059371691] [2024-10-14 21:15:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099873599] [2024-10-14 21:15:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:38,697 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) [2024-10-14 21:15:38,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 21:15:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:38,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 21:15:38,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:38,820 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 [2024-10-14 21:15:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:38,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059371691] [2024-10-14 21:15:38,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099873599] [2024-10-14 21:15:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099873599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:38,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323366994] [2024-10-14 21:15:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:38,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:38,913 INFO L87 Difference]: Start difference. First operand 228 states and 248 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:39,333 INFO L93 Difference]: Finished difference Result 327 states and 332 transitions. [2024-10-14 21:15:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:39,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-14 21:15:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:39,334 INFO L225 Difference]: With dead ends: 327 [2024-10-14 21:15:39,334 INFO L226 Difference]: Without dead ends: 325 [2024-10-14 21:15:39,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:39,336 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 202 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:39,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 839 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:15:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-14 21:15:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 228. [2024-10-14 21:15:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.7279411764705883) internal successors, (235), 220 states have internal predecessors, (235), 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) [2024-10-14 21:15:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2024-10-14 21:15:39,344 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 25 [2024-10-14 21:15:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:39,344 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2024-10-14 21:15:39,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2024-10-14 21:15:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 21:15:39,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:39,345 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] [2024-10-14 21:15:39,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 21:15:39,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:39,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_35_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:39,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1836414924, now seen corresponding path program 1 times [2024-10-14 21:15:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:39,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452847113] [2024-10-14 21:15:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:39,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:39,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452847113] [2024-10-14 21:15:39,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452847113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:39,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224242653] [2024-10-14 21:15:39,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:39,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:39,720 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 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) [2024-10-14 21:15:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:40,197 INFO L93 Difference]: Finished difference Result 325 states and 330 transitions. [2024-10-14 21:15:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:40,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 [2024-10-14 21:15:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:40,198 INFO L225 Difference]: With dead ends: 325 [2024-10-14 21:15:40,198 INFO L226 Difference]: Without dead ends: 319 [2024-10-14 21:15:40,199 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 [2024-10-14 21:15:40,199 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 178 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:40,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 706 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-14 21:15:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 228. [2024-10-14 21:15:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6838235294117647) internal successors, (229), 220 states have internal predecessors, (229), 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) [2024-10-14 21:15:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 240 transitions. [2024-10-14 21:15:40,210 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 240 transitions. Word has length 27 [2024-10-14 21:15:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:40,210 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 240 transitions. [2024-10-14 21:15:40,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-10-14 21:15:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 240 transitions. [2024-10-14 21:15:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 21:15:40,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:40,211 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] [2024-10-14 21:15:40,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 21:15:40,211 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_35_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:40,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:40,211 INFO L85 PathProgramCache]: Analyzing trace with hash 860392402, now seen corresponding path program 1 times [2024-10-14 21:15:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606503767] [2024-10-14 21:15:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:40,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:40,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534891957] [2024-10-14 21:15:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:40,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:40,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:40,236 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) [2024-10-14 21:15:40,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 21:15:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:40,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 21:15:40,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:40,311 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 [2024-10-14 21:15:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:40,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606503767] [2024-10-14 21:15:40,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534891957] [2024-10-14 21:15:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534891957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:40,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:40,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207669026] [2024-10-14 21:15:40,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:40,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:40,454 INFO L87 Difference]: Start difference. First operand 228 states and 240 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-10-14 21:15:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:40,863 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2024-10-14 21:15:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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 33 [2024-10-14 21:15:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:40,865 INFO L225 Difference]: With dead ends: 319 [2024-10-14 21:15:40,865 INFO L226 Difference]: Without dead ends: 317 [2024-10-14 21:15:40,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-14 21:15:40,866 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 190 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:40,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 718 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:15:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-14 21:15:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 228. [2024-10-14 21:15:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6691176470588236) internal successors, (227), 220 states have internal predecessors, (227), 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) [2024-10-14 21:15:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 238 transitions. [2024-10-14 21:15:40,873 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 238 transitions. Word has length 33 [2024-10-14 21:15:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:40,873 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 238 transitions. [2024-10-14 21:15:40,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-10-14 21:15:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 238 transitions. [2024-10-14 21:15:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-14 21:15:40,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:40,874 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] [2024-10-14 21:15:40,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 21:15:41,078 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,SelfDestructingSolverStorable5 [2024-10-14 21:15:41,079 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_35_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:41,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2091583532, now seen corresponding path program 1 times [2024-10-14 21:15:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:41,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412353749] [2024-10-14 21:15:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412353749] [2024-10-14 21:15:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412353749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:41,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148267229] [2024-10-14 21:15:41,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:41,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:41,182 INFO L87 Difference]: Start difference. First operand 228 states and 238 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-10-14 21:15:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:41,372 INFO L93 Difference]: Finished difference Result 315 states and 319 transitions. [2024-10-14 21:15:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:41,372 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), 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 35 [2024-10-14 21:15:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:41,373 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:41,373 INFO L226 Difference]: Without dead ends: 313 [2024-10-14 21:15:41,373 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 [2024-10-14 21:15:41,374 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 167 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:41,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 866 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-14 21:15:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 228. [2024-10-14 21:15:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6544117647058822) internal successors, (225), 220 states have internal predecessors, (225), 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) [2024-10-14 21:15:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 236 transitions. [2024-10-14 21:15:41,379 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 236 transitions. Word has length 35 [2024-10-14 21:15:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:41,379 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 236 transitions. [2024-10-14 21:15:41,379 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), 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) [2024-10-14 21:15:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 236 transitions. [2024-10-14 21:15:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 21:15:41,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:41,380 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] [2024-10-14 21:15:41,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 21:15:41,380 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_35_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 32926678, now seen corresponding path program 1 times [2024-10-14 21:15:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678899141] [2024-10-14 21:15:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:41,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678899141] [2024-10-14 21:15:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678899141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:41,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484339842] [2024-10-14 21:15:41,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:41,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:41,564 INFO L87 Difference]: Start difference. First operand 228 states and 236 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-14 21:15:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:44,677 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2024-10-14 21:15:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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 37 [2024-10-14 21:15:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:44,679 INFO L225 Difference]: With dead ends: 313 [2024-10-14 21:15:44,681 INFO L226 Difference]: Without dead ends: 312 [2024-10-14 21:15:44,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:44,683 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 163 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:44,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 926 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-14 21:15:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-14 21:15:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 228. [2024-10-14 21:15:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6470588235294117) internal successors, (224), 220 states have internal predecessors, (224), 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) [2024-10-14 21:15:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 235 transitions. [2024-10-14 21:15:44,690 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 235 transitions. Word has length 37 [2024-10-14 21:15:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:44,691 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 235 transitions. [2024-10-14 21:15:44,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-14 21:15:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 235 transitions. [2024-10-14 21:15:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 21:15:44,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:44,691 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] [2024-10-14 21:15:44,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 21:15:44,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_35_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:44,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1020727222, now seen corresponding path program 1 times [2024-10-14 21:15:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:44,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522146207] [2024-10-14 21:15:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:44,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:44,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:44,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522146207] [2024-10-14 21:15:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522146207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:44,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:44,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474698458] [2024-10-14 21:15:44,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:44,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:44,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:44,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:44,826 INFO L87 Difference]: Start difference. First operand 228 states and 235 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-10-14 21:15:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:45,736 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-10-14 21:15:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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 38 [2024-10-14 21:15:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:45,738 INFO L225 Difference]: With dead ends: 312 [2024-10-14 21:15:45,738 INFO L226 Difference]: Without dead ends: 311 [2024-10-14 21:15:45,738 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 [2024-10-14 21:15:45,738 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 160 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:45,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 814 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 21:15:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-14 21:15:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 228. [2024-10-14 21:15:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6397058823529411) internal successors, (223), 220 states have internal predecessors, (223), 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) [2024-10-14 21:15:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 234 transitions. [2024-10-14 21:15:45,744 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 234 transitions. Word has length 38 [2024-10-14 21:15:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:45,744 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 234 transitions. [2024-10-14 21:15:45,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-10-14 21:15:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 234 transitions. [2024-10-14 21:15:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 21:15:45,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:45,748 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] [2024-10-14 21:15:45,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 21:15:45,748 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_35_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:45,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1577773016, now seen corresponding path program 1 times [2024-10-14 21:15:45,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440366585] [2024-10-14 21:15:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:45,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440366585] [2024-10-14 21:15:45,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440366585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:45,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:45,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656345996] [2024-10-14 21:15:45,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:45,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:45,900 INFO L87 Difference]: Start difference. First operand 228 states and 234 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-10-14 21:15:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:46,859 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2024-10-14 21:15:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:46,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 39 [2024-10-14 21:15:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:46,860 INFO L225 Difference]: With dead ends: 313 [2024-10-14 21:15:46,860 INFO L226 Difference]: Without dead ends: 312 [2024-10-14 21:15:46,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:46,861 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 141 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:46,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 704 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 21:15:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-14 21:15:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 228. [2024-10-14 21:15:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6323529411764706) internal successors, (222), 220 states have internal predecessors, (222), 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) [2024-10-14 21:15:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 233 transitions. [2024-10-14 21:15:46,866 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 233 transitions. Word has length 39 [2024-10-14 21:15:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:46,866 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 233 transitions. [2024-10-14 21:15:46,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-10-14 21:15:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 233 transitions. [2024-10-14 21:15:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 21:15:46,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:46,867 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] [2024-10-14 21:15:46,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 21:15:46,867 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_35_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:46,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1666323448, now seen corresponding path program 1 times [2024-10-14 21:15:46,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:46,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243925911] [2024-10-14 21:15:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:46,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243925911] [2024-10-14 21:15:46,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243925911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:46,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751203273] [2024-10-14 21:15:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:46,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:46,990 INFO L87 Difference]: Start difference. First operand 228 states and 233 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-10-14 21:15:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:47,697 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2024-10-14 21:15:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 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 40 [2024-10-14 21:15:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:47,698 INFO L225 Difference]: With dead ends: 312 [2024-10-14 21:15:47,698 INFO L226 Difference]: Without dead ends: 311 [2024-10-14 21:15:47,699 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 [2024-10-14 21:15:47,699 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 135 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:47,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 697 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 21:15:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-14 21:15:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 228. [2024-10-14 21:15:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.625) internal successors, (221), 220 states have internal predecessors, (221), 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) [2024-10-14 21:15:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-10-14 21:15:47,707 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 40 [2024-10-14 21:15:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:47,707 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-10-14 21:15:47,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-10-14 21:15:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-10-14 21:15:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-14 21:15:47,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:47,709 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, 1, 1, 1, 1] [2024-10-14 21:15:47,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 21:15:47,709 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_35_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:47,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:47,710 INFO L85 PathProgramCache]: Analyzing trace with hash -624524170, now seen corresponding path program 1 times [2024-10-14 21:15:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:47,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268020882] [2024-10-14 21:15:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:47,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 21:15:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:47,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:47,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268020882] [2024-10-14 21:15:47,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268020882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:47,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:47,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:47,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576083357] [2024-10-14 21:15:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:47,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:47,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:47,868 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-14 21:15:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:47,941 INFO L93 Difference]: Finished difference Result 311 states and 315 transitions. [2024-10-14 21:15:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 48 [2024-10-14 21:15:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:47,942 INFO L225 Difference]: With dead ends: 311 [2024-10-14 21:15:47,942 INFO L226 Difference]: Without dead ends: 310 [2024-10-14 21:15:47,943 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 [2024-10-14 21:15:47,943 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 125 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:47,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1063 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:15:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-14 21:15:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 229. [2024-10-14 21:15:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 221 states have internal predecessors, (222), 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) [2024-10-14 21:15:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-10-14 21:15:47,949 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 48 [2024-10-14 21:15:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:47,949 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-10-14 21:15:47,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-14 21:15:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-10-14 21:15:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 21:15:47,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:47,952 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, 1, 1, 1, 1, 1] [2024-10-14 21:15:47,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 21:15:47,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_27_to_35_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:47,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2114587428, now seen corresponding path program 1 times [2024-10-14 21:15:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533529423] [2024-10-14 21:15:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 21:15:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:48,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:48,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533529423] [2024-10-14 21:15:48,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533529423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:48,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:48,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423757618] [2024-10-14 21:15:48,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:48,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:48,115 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-10-14 21:15:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:48,187 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-10-14 21:15:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 49 [2024-10-14 21:15:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:48,189 INFO L225 Difference]: With dead ends: 229 [2024-10-14 21:15:48,189 INFO L226 Difference]: Without dead ends: 228 [2024-10-14 21:15:48,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:48,189 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 227 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:48,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 790 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:15:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-14 21:15:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-10-14 21:15:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 220 states have internal predecessors, (221), 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) [2024-10-14 21:15:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-10-14 21:15:48,195 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 49 [2024-10-14 21:15:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:48,196 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-10-14 21:15:48,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-10-14 21:15:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-10-14 21:15:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 21:15:48,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:48,196 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, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:48,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 21:15:48,197 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_27_to_35_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:48,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1127701048, now seen corresponding path program 1 times [2024-10-14 21:15:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:48,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219209945] [2024-10-14 21:15:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 21:15:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219209945] [2024-10-14 21:15:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219209945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:48,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569061144] [2024-10-14 21:15:48,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:48,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:48,327 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-10-14 21:15:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:48,461 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-10-14 21:15:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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 50 [2024-10-14 21:15:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:48,463 INFO L225 Difference]: With dead ends: 308 [2024-10-14 21:15:48,463 INFO L226 Difference]: Without dead ends: 306 [2024-10-14 21:15:48,464 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 [2024-10-14 21:15:48,464 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 121 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:48,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 748 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-14 21:15:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 231. [2024-10-14 21:15:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 140 states have (on average 1.6) internal successors, (224), 223 states have internal predecessors, (224), 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) [2024-10-14 21:15:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2024-10-14 21:15:48,471 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 50 [2024-10-14 21:15:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:48,471 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2024-10-14 21:15:48,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-10-14 21:15:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2024-10-14 21:15:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-14 21:15:48,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:48,471 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:48,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 21:15:48,471 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:48,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 598895397, now seen corresponding path program 1 times [2024-10-14 21:15:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109866868] [2024-10-14 21:15:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-14 21:15:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 21:15:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109866868] [2024-10-14 21:15:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109866868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:48,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560115069] [2024-10-14 21:15:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:48,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:48,609 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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) [2024-10-14 21:15:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:49,127 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-10-14 21:15:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:49,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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 51 [2024-10-14 21:15:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:49,129 INFO L225 Difference]: With dead ends: 308 [2024-10-14 21:15:49,129 INFO L226 Difference]: Without dead ends: 298 [2024-10-14 21:15:49,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:49,129 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 236 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:49,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 456 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-14 21:15:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 244. [2024-10-14 21:15:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.5526315789473684) internal successors, (236), 234 states have internal predecessors, (236), 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) [2024-10-14 21:15:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2024-10-14 21:15:49,135 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 51 [2024-10-14 21:15:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:49,135 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2024-10-14 21:15:49,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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) [2024-10-14 21:15:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2024-10-14 21:15:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 21:15:49,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:49,136 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:49,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 21:15:49,136 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_27_to_35_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:49,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1388955642, now seen corresponding path program 1 times [2024-10-14 21:15:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122119740] [2024-10-14 21:15:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083677893] [2024-10-14 21:15:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:49,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:49,155 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) [2024-10-14 21:15:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 21:15:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:49,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 21:15:49,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:49,234 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 [2024-10-14 21:15:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:49,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:49,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:49,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122119740] [2024-10-14 21:15:49,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:49,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083677893] [2024-10-14 21:15:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083677893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:49,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155341059] [2024-10-14 21:15:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:49,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:49,347 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-10-14 21:15:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:49,719 INFO L93 Difference]: Finished difference Result 315 states and 325 transitions. [2024-10-14 21:15:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 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 52 [2024-10-14 21:15:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:49,720 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:49,720 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:49,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:49,721 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 185 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:49,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 638 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 274. [2024-10-14 21:15:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 180 states have (on average 1.6) internal successors, (288), 263 states have internal predecessors, (288), 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) [2024-10-14 21:15:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-10-14 21:15:49,729 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 52 [2024-10-14 21:15:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:49,730 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-10-14 21:15:49,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-10-14 21:15:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-10-14 21:15:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-14 21:15:49,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:49,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:49,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 21:15:49,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:49,931 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_27_to_35_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:49,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 107952168, now seen corresponding path program 1 times [2024-10-14 21:15:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:49,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70189912] [2024-10-14 21:15:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784545914] [2024-10-14 21:15:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:49,949 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) [2024-10-14 21:15:49,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 21:15:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:50,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 21:15:50,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:50,033 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 [2024-10-14 21:15:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:50,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70189912] [2024-10-14 21:15:50,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784545914] [2024-10-14 21:15:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784545914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:50,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:50,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:50,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950048330] [2024-10-14 21:15:50,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:50,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:50,141 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-10-14 21:15:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:50,389 INFO L93 Difference]: Finished difference Result 315 states and 324 transitions. [2024-10-14 21:15:50,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:50,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 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 53 [2024-10-14 21:15:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:50,390 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:50,390 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:50,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:50,391 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 182 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:50,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 666 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 275. [2024-10-14 21:15:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 181 states have (on average 1.5966850828729282) internal successors, (289), 264 states have internal predecessors, (289), 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) [2024-10-14 21:15:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-10-14 21:15:50,397 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 53 [2024-10-14 21:15:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:50,398 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-10-14 21:15:50,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-10-14 21:15:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-10-14 21:15:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-14 21:15:50,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:50,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:50,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:50,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 21:15:50,599 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_27_to_35_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:50,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -948449860, now seen corresponding path program 1 times [2024-10-14 21:15:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:50,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103016082] [2024-10-14 21:15:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:50,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:50,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680478545] [2024-10-14 21:15:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:50,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:50,617 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) [2024-10-14 21:15:50,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 21:15:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:50,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 21:15:50,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:50,701 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 [2024-10-14 21:15:50,798 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 23 treesize of output 3 [2024-10-14 21:15:50,815 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 [2024-10-14 21:15:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:50,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103016082] [2024-10-14 21:15:50,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680478545] [2024-10-14 21:15:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680478545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:50,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:50,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 21:15:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540847068] [2024-10-14 21:15:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:50,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:50,828 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 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) [2024-10-14 21:15:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:51,119 INFO L93 Difference]: Finished difference Result 315 states and 323 transitions. [2024-10-14 21:15:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 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 54 [2024-10-14 21:15:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:51,121 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:51,121 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:51,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 21:15:51,122 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 189 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:51,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 774 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 276. [2024-10-14 21:15:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 182 states have (on average 1.5934065934065933) internal successors, (290), 265 states have internal predecessors, (290), 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) [2024-10-14 21:15:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2024-10-14 21:15:51,128 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 54 [2024-10-14 21:15:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:51,128 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2024-10-14 21:15:51,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 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) [2024-10-14 21:15:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2024-10-14 21:15:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 21:15:51,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:51,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:51,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 21:15:51,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 21:15:51,329 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_27_to_35_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:51,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 662825642, now seen corresponding path program 1 times [2024-10-14 21:15:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:51,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986720438] [2024-10-14 21:15:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738592943] [2024-10-14 21:15:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:51,346 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) [2024-10-14 21:15:51,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 21:15:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:51,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 21:15:51,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:51,431 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 [2024-10-14 21:15:51,526 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 [2024-10-14 21:15:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:51,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986720438] [2024-10-14 21:15:51,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738592943] [2024-10-14 21:15:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738592943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:51,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:51,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 21:15:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327046246] [2024-10-14 21:15:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:51,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:51,564 INFO L87 Difference]: Start difference. First operand 276 states and 304 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 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) [2024-10-14 21:15:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:51,825 INFO L93 Difference]: Finished difference Result 315 states and 322 transitions. [2024-10-14 21:15:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 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 55 [2024-10-14 21:15:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:51,827 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:51,827 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:51,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 21:15:51,827 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 188 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:51,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 721 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 277. [2024-10-14 21:15:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 183 states have (on average 1.5901639344262295) internal successors, (291), 266 states have internal predecessors, (291), 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) [2024-10-14 21:15:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 305 transitions. [2024-10-14 21:15:51,833 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 305 transitions. Word has length 55 [2024-10-14 21:15:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:51,834 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 305 transitions. [2024-10-14 21:15:51,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 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) [2024-10-14 21:15:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 305 transitions. [2024-10-14 21:15:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 21:15:51,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:51,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:51,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 21:15:52,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:52,035 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_27_to_35_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:52,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash -927241346, now seen corresponding path program 1 times [2024-10-14 21:15:52,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:52,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412963050] [2024-10-14 21:15:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807406801] [2024-10-14 21:15:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:52,055 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) [2024-10-14 21:15:52,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 21:15:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:52,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 21:15:52,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:52,145 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 [2024-10-14 21:15:52,253 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 23 treesize of output 3 [2024-10-14 21:15:52,295 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 [2024-10-14 21:15:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:52,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:52,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412963050] [2024-10-14 21:15:52,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:52,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807406801] [2024-10-14 21:15:52,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807406801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:52,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:52,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 21:15:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29147865] [2024-10-14 21:15:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:52,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 21:15:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 21:15:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:52,315 INFO L87 Difference]: Start difference. First operand 277 states and 305 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-10-14 21:15:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:52,667 INFO L93 Difference]: Finished difference Result 315 states and 321 transitions. [2024-10-14 21:15:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 21:15:52,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 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 56 [2024-10-14 21:15:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:52,668 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:52,668 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:52,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-14 21:15:52,669 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 183 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:52,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1022 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2024-10-14 21:15:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 184 states have (on average 1.5869565217391304) internal successors, (292), 267 states have internal predecessors, (292), 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) [2024-10-14 21:15:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2024-10-14 21:15:52,675 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 56 [2024-10-14 21:15:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:52,678 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2024-10-14 21:15:52,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-10-14 21:15:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2024-10-14 21:15:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-14 21:15:52,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:52,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:52,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 21:15:52,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:52,879 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_27_to_35_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:52,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1320289580, now seen corresponding path program 1 times [2024-10-14 21:15:52,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:52,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568296632] [2024-10-14 21:15:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096702753] [2024-10-14 21:15:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:52,898 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) [2024-10-14 21:15:52,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 21:15:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:52,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 21:15:52,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:52,988 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 [2024-10-14 21:15:53,072 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 [2024-10-14 21:15:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:53,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:53,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568296632] [2024-10-14 21:15:53,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096702753] [2024-10-14 21:15:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096702753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:53,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 21:15:53,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076037997] [2024-10-14 21:15:53,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:53,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 21:15:53,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 21:15:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:53,134 INFO L87 Difference]: Start difference. First operand 278 states and 306 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-10-14 21:15:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:53,494 INFO L93 Difference]: Finished difference Result 315 states and 320 transitions. [2024-10-14 21:15:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 21:15:53,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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 57 [2024-10-14 21:15:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:53,495 INFO L225 Difference]: With dead ends: 315 [2024-10-14 21:15:53,495 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:15:53,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-14 21:15:53,496 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 122 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:53,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1109 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:15:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 279. [2024-10-14 21:15:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 185 states have (on average 1.5837837837837838) internal successors, (293), 268 states have internal predecessors, (293), 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) [2024-10-14 21:15:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2024-10-14 21:15:53,502 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 57 [2024-10-14 21:15:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:53,502 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2024-10-14 21:15:53,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-10-14 21:15:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2024-10-14 21:15:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 21:15:53,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:53,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:53,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 21:15:53,703 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,SelfDestructingSolverStorable20 [2024-10-14 21:15:53,703 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_27_to_35_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-14 21:15:53,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2020695744, now seen corresponding path program 1 times [2024-10-14 21:15:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118312700] [2024-10-14 21:15:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat