./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_ps4-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_ps4-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:15:30,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:15:31,060 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:15:31,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:15:31,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:15:31,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:15:31,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:15:31,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:15:31,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:15:31,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:15:31,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:15:31,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:15:31,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:15:31,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:15:31,098 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:15:31,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:15:31,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:15:31,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:15:31,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:15:31,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:15:31,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:15:31,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:15:31,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:15:31,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:15:31,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:15:31,103 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:15:31,104 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:15:31,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:15:31,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:15:31,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:15:31,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:15:31,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:15:31,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:15:31,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:15:31,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:31,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:15:31,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:15:31,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:15:31,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:15:31,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:15:31,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:15:31,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:15:31,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:15:31,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:15:31,109 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 [2024-10-14 21:15:31,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:15:31,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:15:31,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:15:31,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:15:31,404 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:15:31,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-10-14 21:15:32,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:15:33,048 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:15:33,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-10-14 21:15:33,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01310400e/f8823896751748ddb7064af21af61d15/FLAG9e738bfdc [2024-10-14 21:15:33,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01310400e/f8823896751748ddb7064af21af61d15 [2024-10-14 21:15:33,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:15:33,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:15:33,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:33,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:15:33,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:15:33,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dfeb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33, skipping insertion in model container [2024-10-14 21:15:33,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:15:33,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:33,312 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:15:33,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:33,357 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:15:33,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33 WrapperNode [2024-10-14 21:15:33,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:33,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:33,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:15:33,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:15:33,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,406 INFO L138 Inliner]: procedures = 16, calls = 64, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-10-14 21:15:33,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:33,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:15:33,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:15:33,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:15:33,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,444 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 3, 4, 5, 27]. 66 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-10-14 21:15:33,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:15:33,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:15:33,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:15:33,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:15:33,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (1/1) ... [2024-10-14 21:15:33,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:33,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:33,506 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 21:15:33,515 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 21:15:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:15:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:15:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:15:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:15:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:15:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:15:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-10-14 21:15:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-10-14 21:15:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:15:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:15:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:15:33,684 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:15:33,687 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:15:34,833 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-10-14 21:15:34,834 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:15:34,872 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:15:34,874 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 21:15:34,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:34 BoogieIcfgContainer [2024-10-14 21:15:34,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:15:34,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:15:34,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:15:34,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:15:34,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:15:33" (1/3) ... [2024-10-14 21:15:34,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@900b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:34, skipping insertion in model container [2024-10-14 21:15:34,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:33" (2/3) ... [2024-10-14 21:15:34,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@900b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:34, skipping insertion in model container [2024-10-14 21:15:34,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:34" (3/3) ... [2024-10-14 21:15:34,884 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4-ll.c [2024-10-14 21:15:34,905 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:15:34,905 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-10-14 21:15:34,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:15:34,983 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;@63bab32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:15:34,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-14 21:15:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 72 states have (on average 1.875) internal successors, (135), 133 states have internal predecessors, (135), 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 21:15:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 21:15:34,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:34,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 21:15:34,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:35,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash 190432111, now seen corresponding path program 1 times [2024-10-14 21:15:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296183114] [2024-10-14 21:15:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:35,475 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 21:15:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296183114] [2024-10-14 21:15:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296183114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:35,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803560142] [2024-10-14 21:15:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:35,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:35,512 INFO L87 Difference]: Start difference. First operand has 140 states, 72 states have (on average 1.875) internal successors, (135), 133 states have internal predecessors, (135), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 21:15:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:35,883 INFO L93 Difference]: Finished difference Result 362 states and 384 transitions. [2024-10-14 21:15:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2024-10-14 21:15:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:35,898 INFO L225 Difference]: With dead ends: 362 [2024-10-14 21:15:35,898 INFO L226 Difference]: Without dead ends: 221 [2024-10-14 21:15:35,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 21:15:35,908 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 182 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:35,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 617 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-14 21:15:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 166. [2024-10-14 21:15:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.8265306122448979) internal successors, (179), 158 states have internal predecessors, (179), 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 21:15:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2024-10-14 21:15:35,957 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 5 [2024-10-14 21:15:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:35,958 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2024-10-14 21:15:35,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 21:15:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2024-10-14 21:15:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:15:35,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:35,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:35,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:15:35,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:35,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1678331695, now seen corresponding path program 1 times [2024-10-14 21:15:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988509954] [2024-10-14 21:15:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:35,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655408973] [2024-10-14 21:15:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:35,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:35,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:35,994 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 21:15:35,996 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 21:15:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:36,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:15:36,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:36,147 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 21:15:36,196 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 21:15:36,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:36,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:36,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988509954] [2024-10-14 21:15:36,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655408973] [2024-10-14 21:15:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655408973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:36,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:36,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837672215] [2024-10-14 21:15:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:36,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:36,204 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:15:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:36,637 INFO L93 Difference]: Finished difference Result 245 states and 250 transitions. [2024-10-14 21:15:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:15:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:36,639 INFO L225 Difference]: With dead ends: 245 [2024-10-14 21:15:36,639 INFO L226 Difference]: Without dead ends: 239 [2024-10-14 21:15:36,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:15:36,643 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 172 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:36,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 527 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:15:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-14 21:15:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 166. [2024-10-14 21:15:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7653061224489797) internal successors, (173), 158 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2024-10-14 21:15:36,667 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 7 [2024-10-14 21:15:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:36,668 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2024-10-14 21:15:36,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:15:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2024-10-14 21:15:36,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 21:15:36,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:36,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:36,690 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 21:15:36,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:36,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:36,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2072340233, now seen corresponding path program 1 times [2024-10-14 21:15:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019730522] [2024-10-14 21:15:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:36,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:37,458 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 21:15:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019730522] [2024-10-14 21:15:37,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019730522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:37,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:37,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57626576] [2024-10-14 21:15:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:37,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:37,461 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 21:15:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:38,090 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2024-10-14 21:15:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:38,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 13 [2024-10-14 21:15:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:38,092 INFO L225 Difference]: With dead ends: 215 [2024-10-14 21:15:38,092 INFO L226 Difference]: Without dead ends: 214 [2024-10-14 21:15:38,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:38,094 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 154 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:38,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 707 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-10-14 21:15:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2024-10-14 21:15:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7551020408163265) internal successors, (172), 158 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2024-10-14 21:15:38,106 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 13 [2024-10-14 21:15:38,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:38,106 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2024-10-14 21:15:38,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 21:15:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2024-10-14 21:15:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 21:15:38,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:38,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:38,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 21:15:38,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:38,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash 181962338, now seen corresponding path program 1 times [2024-10-14 21:15:38,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:38,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256327622] [2024-10-14 21:15:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037369247] [2024-10-14 21:15:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:38,128 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 21:15:38,129 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 21:15:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:38,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 21:15:38,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:38,215 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 21:15:38,219 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 21:15:38,343 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 21:15:38,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256327622] [2024-10-14 21:15:38,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037369247] [2024-10-14 21:15:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037369247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:38,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:38,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457154714] [2024-10-14 21:15:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:38,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:38,346 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:38,619 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2024-10-14 21:15:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-14 21:15:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:38,622 INFO L225 Difference]: With dead ends: 202 [2024-10-14 21:15:38,622 INFO L226 Difference]: Without dead ends: 201 [2024-10-14 21:15:38,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:38,623 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 152 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:38,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 631 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-14 21:15:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2024-10-14 21:15:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7448979591836735) internal successors, (171), 158 states have internal predecessors, (171), 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 21:15:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2024-10-14 21:15:38,638 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 14 [2024-10-14 21:15:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:38,638 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 182 transitions. [2024-10-14 21:15:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 182 transitions. [2024-10-14 21:15:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 21:15:38,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:38,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:38,656 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 21:15:38,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 21:15:38,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:38,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1345865305, now seen corresponding path program 1 times [2024-10-14 21:15:38,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:38,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505341813] [2024-10-14 21:15:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:38,962 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 21:15:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:38,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505341813] [2024-10-14 21:15:38,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505341813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:38,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:38,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039768122] [2024-10-14 21:15:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:38,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:38,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:38,964 INFO L87 Difference]: Start difference. First operand 166 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:39,145 INFO L93 Difference]: Finished difference Result 237 states and 242 transitions. [2024-10-14 21:15:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-14 21:15:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:39,147 INFO L225 Difference]: With dead ends: 237 [2024-10-14 21:15:39,147 INFO L226 Difference]: Without dead ends: 231 [2024-10-14 21:15:39,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 21:15:39,148 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 134 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:39,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 534 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-14 21:15:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2024-10-14 21:15:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.683673469387755) internal successors, (165), 158 states have internal predecessors, (165), 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 21:15:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2024-10-14 21:15:39,156 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 15 [2024-10-14 21:15:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:39,157 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2024-10-14 21:15:39,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2024-10-14 21:15:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 21:15:39,157 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:39,158 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] [2024-10-14 21:15:39,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 21:15:39,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:39,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2063494783, now seen corresponding path program 1 times [2024-10-14 21:15:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564840890] [2024-10-14 21:15:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:39,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658656478] [2024-10-14 21:15:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:39,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:39,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:39,179 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 21:15:39,181 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 21:15:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:39,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 21:15:39,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:39,281 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 21:15:39,286 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 21:15:39,656 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 21:15:39,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564840890] [2024-10-14 21:15:39,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658656478] [2024-10-14 21:15:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658656478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 21:15:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784574971] [2024-10-14 21:15:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:39,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 21:15:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 21:15:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:15:39,659 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 21:15:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:40,395 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2024-10-14 21:15:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 21:15:40,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 21 [2024-10-14 21:15:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:40,398 INFO L225 Difference]: With dead ends: 195 [2024-10-14 21:15:40,398 INFO L226 Difference]: Without dead ends: 193 [2024-10-14 21:15:40,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-10-14 21:15:40,399 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 120 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:40,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 785 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 21:15:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-14 21:15:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 166. [2024-10-14 21:15:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.663265306122449) internal successors, (163), 158 states have internal predecessors, (163), 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 21:15:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 174 transitions. [2024-10-14 21:15:40,410 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 174 transitions. Word has length 21 [2024-10-14 21:15:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:40,410 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 174 transitions. [2024-10-14 21:15:40,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 21:15:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 174 transitions. [2024-10-14 21:15:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 21:15:40,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:40,412 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] [2024-10-14 21:15:40,429 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 21:15:40,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:40,616 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:40,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1256399903, now seen corresponding path program 1 times [2024-10-14 21:15:40,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:40,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821260908] [2024-10-14 21:15:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343954440] [2024-10-14 21:15:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:40,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:40,638 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 21:15:40,639 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 21:15:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:40,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:15:40,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:40,723 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 21:15:40,773 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 21:15:40,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821260908] [2024-10-14 21:15:40,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343954440] [2024-10-14 21:15:40,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343954440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:40,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:40,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533051452] [2024-10-14 21:15:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:40,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:40,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:40,776 INFO L87 Difference]: Start difference. First operand 166 states and 174 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 21:15:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:40,932 INFO L93 Difference]: Finished difference Result 229 states and 234 transitions. [2024-10-14 21:15:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:40,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2024-10-14 21:15:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:40,934 INFO L225 Difference]: With dead ends: 229 [2024-10-14 21:15:40,934 INFO L226 Difference]: Without dead ends: 227 [2024-10-14 21:15:40,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 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 21:15:40,936 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 108 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:40,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 553 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-14 21:15:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 166. [2024-10-14 21:15:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 158 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2024-10-14 21:15:40,950 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 23 [2024-10-14 21:15:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:40,950 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2024-10-14 21:15:40,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 21:15:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2024-10-14 21:15:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 21:15:40,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:40,951 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 21:15:40,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 21:15:41,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:41,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:41,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash -514492093, now seen corresponding path program 1 times [2024-10-14 21:15:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:41,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012727319] [2024-10-14 21:15:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924739924] [2024-10-14 21:15:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:41,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:41,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:41,177 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 21:15:41,178 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 21:15:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:41,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 21:15:41,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:41,281 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 21:15:41,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 21:15:41,573 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 21:15:41,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012727319] [2024-10-14 21:15:41,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924739924] [2024-10-14 21:15:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924739924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279273854] [2024-10-14 21:15:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:41,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:41,576 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 21:15:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:42,920 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2024-10-14 21:15:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 21:15:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:42,921 INFO L225 Difference]: With dead ends: 191 [2024-10-14 21:15:42,922 INFO L226 Difference]: Without dead ends: 190 [2024-10-14 21:15:42,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-10-14 21:15:42,922 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 100 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:42,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 698 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-14 21:15:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-14 21:15:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 166. [2024-10-14 21:15:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6326530612244898) internal successors, (160), 158 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2024-10-14 21:15:42,930 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 25 [2024-10-14 21:15:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:42,931 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2024-10-14 21:15:42,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 21:15:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2024-10-14 21:15:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 21:15:42,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:42,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:42,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:43,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:43,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1230614446, now seen corresponding path program 1 times [2024-10-14 21:15:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583090173] [2024-10-14 21:15:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:43,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344775935] [2024-10-14 21:15:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:43,162 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 21:15:43,165 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 21:15:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:43,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 21:15:43,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:43,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 21:15:43,261 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 21:15:43,962 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 21:15:43,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:43,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:43,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583090173] [2024-10-14 21:15:43,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:43,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344775935] [2024-10-14 21:15:43,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344775935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:43,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:43,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051225304] [2024-10-14 21:15:43,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:43,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:43,964 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:45,390 INFO L93 Difference]: Finished difference Result 190 states and 195 transitions. [2024-10-14 21:15:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-14 21:15:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:45,391 INFO L225 Difference]: With dead ends: 190 [2024-10-14 21:15:45,391 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 21:15:45,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-10-14 21:15:45,392 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 98 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:45,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 700 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 21:15:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 21:15:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 166. [2024-10-14 21:15:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 158 states have internal predecessors, (159), 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 21:15:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2024-10-14 21:15:45,400 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 26 [2024-10-14 21:15:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:45,400 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2024-10-14 21:15:45,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2024-10-14 21:15:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 21:15:45,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:45,402 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] [2024-10-14 21:15:45,417 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 21:15:45,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:45,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:45,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1787576623, now seen corresponding path program 1 times [2024-10-14 21:15:45,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040088913] [2024-10-14 21:15:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:45,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:15:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:45,804 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 21:15:45,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040088913] [2024-10-14 21:15:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040088913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:45,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071299968] [2024-10-14 21:15:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:45,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:45,807 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 21:15:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:45,897 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-10-14 21:15:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:45,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 34 [2024-10-14 21:15:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:45,898 INFO L225 Difference]: With dead ends: 229 [2024-10-14 21:15:45,898 INFO L226 Difference]: Without dead ends: 228 [2024-10-14 21:15:45,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 21:15:45,899 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 93 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:45,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 666 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-14 21:15:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2024-10-14 21:15:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-10-14 21:15:45,905 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 34 [2024-10-14 21:15:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:45,906 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-10-14 21:15:45,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 21:15:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-10-14 21:15:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-14 21:15:45,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:45,907 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 21:15:45,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 21:15:45,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:45,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -419699380, now seen corresponding path program 1 times [2024-10-14 21:15:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593173902] [2024-10-14 21:15:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:15:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,066 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 21:15:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593173902] [2024-10-14 21:15:46,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593173902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:46,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046977600] [2024-10-14 21:15:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:46,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:46,068 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:46,150 INFO L93 Difference]: Finished difference Result 228 states and 232 transitions. [2024-10-14 21:15:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-10-14 21:15:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:46,152 INFO L225 Difference]: With dead ends: 228 [2024-10-14 21:15:46,152 INFO L226 Difference]: Without dead ends: 227 [2024-10-14 21:15:46,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 21:15:46,153 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 90 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:46,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 668 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-14 21:15:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 168. [2024-10-14 21:15:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 21:15:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2024-10-14 21:15:46,159 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2024-10-14 21:15:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:46,159 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2024-10-14 21:15:46,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2024-10-14 21:15:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 21:15:46,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:46,160 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:46,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 21:15:46,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:46,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash -125778735, now seen corresponding path program 1 times [2024-10-14 21:15:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834956080] [2024-10-14 21:15:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:15:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,339 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 21:15:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834956080] [2024-10-14 21:15:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834956080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:46,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996715928] [2024-10-14 21:15:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:46,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:46,340 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:46,467 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-10-14 21:15:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-10-14 21:15:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:46,469 INFO L225 Difference]: With dead ends: 223 [2024-10-14 21:15:46,469 INFO L226 Difference]: Without dead ends: 221 [2024-10-14 21:15:46,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:15:46,469 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 85 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:46,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 569 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-14 21:15:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2024-10-14 21:15:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 162 states have internal predecessors, (163), 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 21:15:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2024-10-14 21:15:46,479 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 36 [2024-10-14 21:15:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:46,479 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2024-10-14 21:15:46,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2024-10-14 21:15:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 21:15:46,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:46,481 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 21:15:46,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 21:15:46,482 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:46,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash 395618041, now seen corresponding path program 1 times [2024-10-14 21:15:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501027234] [2024-10-14 21:15:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:46,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754650159] [2024-10-14 21:15:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:46,505 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 21:15:46,506 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 21:15:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:46,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 21:15:46,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:46,598 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 21:15:46,650 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 21:15:46,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501027234] [2024-10-14 21:15:46,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754650159] [2024-10-14 21:15:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754650159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664036197] [2024-10-14 21:15:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:46,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 21:15:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 21:15:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 21:15:46,652 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 21:15:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:46,807 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-10-14 21:15:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 21:15:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 37 [2024-10-14 21:15:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:46,810 INFO L225 Difference]: With dead ends: 223 [2024-10-14 21:15:46,810 INFO L226 Difference]: Without dead ends: 221 [2024-10-14 21:15:46,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:46,811 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 88 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:46,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 379 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-14 21:15:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2024-10-14 21:15:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.5754716981132075) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-14 21:15:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-10-14 21:15:46,820 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 37 [2024-10-14 21:15:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:46,821 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-10-14 21:15:46,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 21:15:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-10-14 21:15:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 21:15:46,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:46,822 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 21:15:46,839 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 21:15:47,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:47,023 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_26_to_34_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:47,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash -614274957, now seen corresponding path program 1 times [2024-10-14 21:15:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86574432] [2024-10-14 21:15:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515704892] [2024-10-14 21:15:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:47,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:47,044 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 21:15:47,046 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 21:15:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:47,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 21:15:47,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:47,143 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 21:15:47,294 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 21:15:47,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:47,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86574432] [2024-10-14 21:15:47,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515704892] [2024-10-14 21:15:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515704892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:47,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727086286] [2024-10-14 21:15:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:47,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:47,297 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 21:15:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:47,476 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2024-10-14 21:15:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:47,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 38 [2024-10-14 21:15:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:47,477 INFO L225 Difference]: With dead ends: 240 [2024-10-14 21:15:47,478 INFO L226 Difference]: Without dead ends: 239 [2024-10-14 21:15:47,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:47,478 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 141 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:47,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 519 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-14 21:15:47,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 185. [2024-10-14 21:15:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.5701754385964912) internal successors, (179), 174 states have internal predecessors, (179), 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 21:15:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2024-10-14 21:15:47,484 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 38 [2024-10-14 21:15:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:47,484 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2024-10-14 21:15:47,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 21:15:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2024-10-14 21:15:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 21:15:47,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:47,485 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 21:15:47,502 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 21:15:47,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 21:15:47,690 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:47,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2063150725, now seen corresponding path program 1 times [2024-10-14 21:15:47,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:47,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287490570] [2024-10-14 21:15:47,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:47,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330266518] [2024-10-14 21:15:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:47,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:47,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:47,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 21:15:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:47,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 21:15:47,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:47,814 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 21:15:47,873 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 21:15:47,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287490570] [2024-10-14 21:15:47,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330266518] [2024-10-14 21:15:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330266518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:15:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545024335] [2024-10-14 21:15:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:47,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 21:15:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:47,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 21:15:47,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 21:15:47,875 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:15:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:47,997 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-10-14 21:15:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 21:15:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-14 21:15:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:47,999 INFO L225 Difference]: With dead ends: 226 [2024-10-14 21:15:47,999 INFO L226 Difference]: Without dead ends: 224 [2024-10-14 21:15:47,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:47,999 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 80 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:48,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 376 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-14 21:15:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2024-10-14 21:15:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.5526315789473684) internal successors, (177), 174 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-14 21:15:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 191 transitions. [2024-10-14 21:15:48,006 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 191 transitions. Word has length 39 [2024-10-14 21:15:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:48,007 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 191 transitions. [2024-10-14 21:15:48,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:15:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 191 transitions. [2024-10-14 21:15:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 21:15:48,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:48,009 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 21:15:48,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:48,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 21:15:48,209 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:48,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1862654320, now seen corresponding path program 1 times [2024-10-14 21:15:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:48,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300428648] [2024-10-14 21:15:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329727075] [2024-10-14 21:15:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:48,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:48,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:48,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 21:15:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 21:15:48,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:48,335 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 21:15:48,445 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 21:15:48,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300428648] [2024-10-14 21:15:48,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329727075] [2024-10-14 21:15:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329727075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:48,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045961604] [2024-10-14 21:15:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:48,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:48,448 INFO L87 Difference]: Start difference. First operand 185 states and 191 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:48,645 INFO L93 Difference]: Finished difference Result 238 states and 245 transitions. [2024-10-14 21:15:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:48,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-10-14 21:15:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:48,647 INFO L225 Difference]: With dead ends: 238 [2024-10-14 21:15:48,647 INFO L226 Difference]: Without dead ends: 237 [2024-10-14 21:15:48,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 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 21:15:48,648 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 136 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:48,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 520 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-14 21:15:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 186. [2024-10-14 21:15:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 175 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-14 21:15:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 192 transitions. [2024-10-14 21:15:48,654 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 192 transitions. Word has length 39 [2024-10-14 21:15:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:48,654 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 192 transitions. [2024-10-14 21:15:48,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 192 transitions. [2024-10-14 21:15:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 21:15:48,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:48,655 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 21:15:48,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:48,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 21:15:48,855 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:48,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1907708907, now seen corresponding path program 1 times [2024-10-14 21:15:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154266730] [2024-10-14 21:15:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:48,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176080401] [2024-10-14 21:15:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:48,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:48,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:48,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 21:15:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:48,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 21:15:48,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:49,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 21:15:49,113 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 21:15:49,137 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 21:15:49,153 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 21:15:49,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154266730] [2024-10-14 21:15:49,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176080401] [2024-10-14 21:15:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176080401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140746729] [2024-10-14 21:15:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:49,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:49,157 INFO L87 Difference]: Start difference. First operand 186 states and 192 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:49,404 INFO L93 Difference]: Finished difference Result 238 states and 244 transitions. [2024-10-14 21:15:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-10-14 21:15:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:49,406 INFO L225 Difference]: With dead ends: 238 [2024-10-14 21:15:49,407 INFO L226 Difference]: Without dead ends: 237 [2024-10-14 21:15:49,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 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 21:15:49,408 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 93 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:49,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 753 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-14 21:15:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 187. [2024-10-14 21:15:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 116 states have (on average 1.543103448275862) internal successors, (179), 176 states have internal predecessors, (179), 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 21:15:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2024-10-14 21:15:49,416 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 40 [2024-10-14 21:15:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:49,417 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 193 transitions. [2024-10-14 21:15:49,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 193 transitions. [2024-10-14 21:15:49,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-14 21:15:49,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:49,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:49,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:49,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 21:15:49,621 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:49,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1587045373, now seen corresponding path program 1 times [2024-10-14 21:15:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661244612] [2024-10-14 21:15:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:49,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248872618] [2024-10-14 21:15:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:49,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:49,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:49,638 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:49,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 21:15:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:49,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:15:49,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:49,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 21:15:49,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:49,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-14 21:15:49,828 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 21:15:49,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:49,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661244612] [2024-10-14 21:15:49,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248872618] [2024-10-14 21:15:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248872618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:49,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:49,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124291546] [2024-10-14 21:15:49,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:49,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:49,830 INFO L87 Difference]: Start difference. First operand 187 states and 193 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 21:15:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:50,027 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-10-14 21:15:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 41 [2024-10-14 21:15:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:50,029 INFO L225 Difference]: With dead ends: 226 [2024-10-14 21:15:50,029 INFO L226 Difference]: Without dead ends: 224 [2024-10-14 21:15:50,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:50,029 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 81 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:50,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 404 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-14 21:15:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 187. [2024-10-14 21:15:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-14 21:15:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-10-14 21:15:50,037 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 41 [2024-10-14 21:15:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:50,037 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-10-14 21:15:50,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 21:15:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-10-14 21:15:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-14 21:15:50,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:50,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:50,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:50,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 21:15:50,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_26_to_34_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:50,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 990566194, now seen corresponding path program 1 times [2024-10-14 21:15:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147663833] [2024-10-14 21:15:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217142777] [2024-10-14 21:15:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:50,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:50,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:50,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:50,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 21:15:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:50,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 21:15:50,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:50,386 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 21:15:50,494 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 21:15:50,530 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 21:15:50,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147663833] [2024-10-14 21:15:50,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217142777] [2024-10-14 21:15:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217142777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:50,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:50,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395730629] [2024-10-14 21:15:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:50,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:50,532 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:50,835 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2024-10-14 21:15:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-10-14 21:15:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:50,836 INFO L225 Difference]: With dead ends: 236 [2024-10-14 21:15:50,837 INFO L226 Difference]: Without dead ends: 235 [2024-10-14 21:15:50,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 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 21:15:50,837 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 90 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:50,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 758 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-14 21:15:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 188. [2024-10-14 21:15:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.5213675213675213) internal successors, (178), 177 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-14 21:15:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2024-10-14 21:15:50,843 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 41 [2024-10-14 21:15:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:50,843 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2024-10-14 21:15:50,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2024-10-14 21:15:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-14 21:15:50,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:50,844 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:50,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 21:15:51,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:51,045 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:51,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 642781111, now seen corresponding path program 1 times [2024-10-14 21:15:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:51,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820441807] [2024-10-14 21:15:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:51,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:15:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:51,224 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 21:15:51,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820441807] [2024-10-14 21:15:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820441807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72946655] [2024-10-14 21:15:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:51,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:51,227 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (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 21:15:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:51,593 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2024-10-14 21:15:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-10-14 21:15:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:51,595 INFO L225 Difference]: With dead ends: 193 [2024-10-14 21:15:51,595 INFO L226 Difference]: Without dead ends: 192 [2024-10-14 21:15:51,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 21:15:51,596 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 53 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:51,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 661 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-14 21:15:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2024-10-14 21:15:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 178 states have internal predecessors, (179), 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 21:15:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2024-10-14 21:15:51,602 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 42 [2024-10-14 21:15:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:51,602 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2024-10-14 21:15:51,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (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 21:15:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2024-10-14 21:15:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 21:15:51,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:51,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:51,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 21:15:51,603 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:51,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1548621868, now seen corresponding path program 1 times [2024-10-14 21:15:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924840506] [2024-10-14 21:15:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:51,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:15:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:51,937 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 21:15:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924840506] [2024-10-14 21:15:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924840506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:51,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957367555] [2024-10-14 21:15:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:51,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:51,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:51,938 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:52,286 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2024-10-14 21:15:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-10-14 21:15:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:52,287 INFO L225 Difference]: With dead ends: 192 [2024-10-14 21:15:52,287 INFO L226 Difference]: Without dead ends: 191 [2024-10-14 21:15:52,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:52,288 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 48 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:52,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 634 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:15:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-14 21:15:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-10-14 21:15:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 179 states have internal predecessors, (180), 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 21:15:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 194 transitions. [2024-10-14 21:15:52,294 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 194 transitions. Word has length 43 [2024-10-14 21:15:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:52,294 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 194 transitions. [2024-10-14 21:15:52,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 194 transitions. [2024-10-14 21:15:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-14 21:15:52,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:52,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:52,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 21:15:52,295 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:52,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash 644671347, now seen corresponding path program 1 times [2024-10-14 21:15:52,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164945653] [2024-10-14 21:15:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397293178] [2024-10-14 21:15:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:52,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:52,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:52,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 21:15:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:52,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-14 21:15:52,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:52,443 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 21:15:52,447 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 21:15:52,645 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 21:15:52,743 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 21:15:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:52,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:15:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164945653] [2024-10-14 21:15:53,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397293178] [2024-10-14 21:15:53,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397293178] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:15:53,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 21:15:53,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2024-10-14 21:15:53,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941626074] [2024-10-14 21:15:53,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 21:15:53,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 21:15:53,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 21:15:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-10-14 21:15:53,286 INFO L87 Difference]: Start difference. First operand 190 states and 194 transitions. Second operand has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:15:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:58,897 INFO L93 Difference]: Finished difference Result 382 states and 392 transitions. [2024-10-14 21:15:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 21:15:58,897 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-10-14 21:15:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:58,899 INFO L225 Difference]: With dead ends: 382 [2024-10-14 21:15:58,899 INFO L226 Difference]: Without dead ends: 377 [2024-10-14 21:15:58,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 21:15:58,901 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 656 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:58,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1641 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-14 21:15:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-14 21:15:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 264. [2024-10-14 21:15:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 185 states have (on average 1.6) internal successors, (296), 247 states have internal predecessors, (296), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:15:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2024-10-14 21:15:58,916 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 47 [2024-10-14 21:15:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:58,917 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2024-10-14 21:15:58,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:15:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2024-10-14 21:15:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 21:15:58,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:58,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:58,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:59,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:59,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:59,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1610448195, now seen corresponding path program 1 times [2024-10-14 21:15:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:59,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21657523] [2024-10-14 21:15:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:59,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:15:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:59,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 21:15:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:59,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 21:15:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:15:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21657523] [2024-10-14 21:15:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21657523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:15:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666555729] [2024-10-14 21:15:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:59,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:15:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:15:59,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:59,291 INFO L87 Difference]: Start difference. First operand 264 states and 322 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:15:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:59,778 INFO L93 Difference]: Finished difference Result 303 states and 366 transitions. [2024-10-14 21:15:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:15:59,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-10-14 21:15:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:59,780 INFO L225 Difference]: With dead ends: 303 [2024-10-14 21:15:59,780 INFO L226 Difference]: Without dead ends: 301 [2024-10-14 21:15:59,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:15:59,781 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 136 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:59,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 365 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:59,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-14 21:15:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 267. [2024-10-14 21:15:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 249 states have internal predecessors, (299), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:15:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 325 transitions. [2024-10-14 21:15:59,792 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 325 transitions. Word has length 49 [2024-10-14 21:15:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:59,792 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 325 transitions. [2024-10-14 21:15:59,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:15:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 325 transitions. [2024-10-14 21:15:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 21:15:59,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:59,793 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:59,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 21:15:59,793 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:15:59,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1053877205, now seen corresponding path program 1 times [2024-10-14 21:15:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322546556] [2024-10-14 21:15:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775396034] [2024-10-14 21:15:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:59,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:59,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:59,818 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:59,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 21:15:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:59,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 21:15:59,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:59,940 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 21:16:00,027 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 21:16:00,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:16:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:00,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322546556] [2024-10-14 21:16:00,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775396034] [2024-10-14 21:16:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775396034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:00,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-10-14 21:16:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562597167] [2024-10-14 21:16:00,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:00,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 21:16:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 21:16:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-14 21:16:00,459 INFO L87 Difference]: Start difference. First operand 267 states and 325 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:00,903 INFO L93 Difference]: Finished difference Result 330 states and 364 transitions. [2024-10-14 21:16:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 21:16:00,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-10-14 21:16:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:00,905 INFO L225 Difference]: With dead ends: 330 [2024-10-14 21:16:00,905 INFO L226 Difference]: Without dead ends: 329 [2024-10-14 21:16:00,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-14 21:16:00,907 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 258 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:00,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 671 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:16:00,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-14 21:16:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 267. [2024-10-14 21:16:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5851063829787233) internal successors, (298), 249 states have internal predecessors, (298), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 324 transitions. [2024-10-14 21:16:00,921 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 324 transitions. Word has length 49 [2024-10-14 21:16:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:00,921 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 324 transitions. [2024-10-14 21:16:00,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:00,922 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 324 transitions. [2024-10-14 21:16:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 21:16:00,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:00,922 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:00,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:01,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:01,123 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:01,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1689544904, now seen corresponding path program 1 times [2024-10-14 21:16:01,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214021398] [2024-10-14 21:16:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:01,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423048709] [2024-10-14 21:16:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:01,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:01,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:01,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:01,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 21:16:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:01,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 21:16:01,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:01,274 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 21:16:01,365 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 21:16:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:01,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214021398] [2024-10-14 21:16:03,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423048709] [2024-10-14 21:16:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423048709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:03,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-10-14 21:16:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071080384] [2024-10-14 21:16:03,318 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:03,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 21:16:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 21:16:03,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2024-10-14 21:16:03,319 INFO L87 Difference]: Start difference. First operand 267 states and 324 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:03,707 INFO L93 Difference]: Finished difference Result 329 states and 363 transitions. [2024-10-14 21:16:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 21:16:03,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2024-10-14 21:16:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:03,709 INFO L225 Difference]: With dead ends: 329 [2024-10-14 21:16:03,709 INFO L226 Difference]: Without dead ends: 328 [2024-10-14 21:16:03,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2024-10-14 21:16:03,711 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 253 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:03,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 771 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-14 21:16:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 267. [2024-10-14 21:16:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5797872340425532) internal successors, (297), 249 states have internal predecessors, (297), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 323 transitions. [2024-10-14 21:16:03,727 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 323 transitions. Word has length 50 [2024-10-14 21:16:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:03,727 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 323 transitions. [2024-10-14 21:16:03,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 323 transitions. [2024-10-14 21:16:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-14 21:16:03,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:03,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:03,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:03,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-14 21:16:03,933 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:03,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1452487169, now seen corresponding path program 1 times [2024-10-14 21:16:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368968438] [2024-10-14 21:16:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818632118] [2024-10-14 21:16:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:03,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:03,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:03,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:03,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 21:16:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:04,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 21:16:04,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:04,074 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 21:16:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:04,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:04,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368968438] [2024-10-14 21:16:04,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818632118] [2024-10-14 21:16:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818632118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:04,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90016176] [2024-10-14 21:16:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:04,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:04,155 INFO L87 Difference]: Start difference. First operand 267 states and 323 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:04,450 INFO L93 Difference]: Finished difference Result 307 states and 362 transitions. [2024-10-14 21:16:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:16:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2024-10-14 21:16:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:04,452 INFO L225 Difference]: With dead ends: 307 [2024-10-14 21:16:04,452 INFO L226 Difference]: Without dead ends: 306 [2024-10-14 21:16:04,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:04,453 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 137 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:04,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 452 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 169 Invalid, 7 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-14 21:16:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 268. [2024-10-14 21:16:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.5767195767195767) internal successors, (298), 250 states have internal predecessors, (298), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2024-10-14 21:16:04,463 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2024-10-14 21:16:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:04,464 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2024-10-14 21:16:04,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2024-10-14 21:16:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-14 21:16:04,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:04,465 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:04,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 21:16:04,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 21:16:04,666 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:04,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash -836284361, now seen corresponding path program 1 times [2024-10-14 21:16:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330052885] [2024-10-14 21:16:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:04,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404723926] [2024-10-14 21:16:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:04,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:04,696 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 21:16:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:04,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 21:16:04,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:04,832 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 21:16:04,993 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 21:16:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:05,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:05,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:05,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330052885] [2024-10-14 21:16:05,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:05,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404723926] [2024-10-14 21:16:05,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404723926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:05,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:05,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-14 21:16:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766674699] [2024-10-14 21:16:05,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:05,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 21:16:05,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 21:16:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-10-14 21:16:05,889 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:06,382 INFO L93 Difference]: Finished difference Result 327 states and 361 transitions. [2024-10-14 21:16:06,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 21:16:06,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-10-14 21:16:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:06,384 INFO L225 Difference]: With dead ends: 327 [2024-10-14 21:16:06,384 INFO L226 Difference]: Without dead ends: 326 [2024-10-14 21:16:06,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-14 21:16:06,385 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 207 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:06,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1107 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:16:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-10-14 21:16:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2024-10-14 21:16:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.5714285714285714) internal successors, (297), 250 states have internal predecessors, (297), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 323 transitions. [2024-10-14 21:16:06,396 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 323 transitions. Word has length 51 [2024-10-14 21:16:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:06,396 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 323 transitions. [2024-10-14 21:16:06,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 323 transitions. [2024-10-14 21:16:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 21:16:06,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:06,397 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:06,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-14 21:16:06,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-14 21:16:06,602 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:06,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2077429223, now seen corresponding path program 1 times [2024-10-14 21:16:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:06,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243089043] [2024-10-14 21:16:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:06,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236372561] [2024-10-14 21:16:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:06,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:06,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 21:16:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:06,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 21:16:06,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:06,730 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 21:16:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:06,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:06,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:06,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243089043] [2024-10-14 21:16:06,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:06,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236372561] [2024-10-14 21:16:06,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236372561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:06,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:06,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960853302] [2024-10-14 21:16:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:06,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:06,829 INFO L87 Difference]: Start difference. First operand 268 states and 323 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:07,241 INFO L93 Difference]: Finished difference Result 306 states and 360 transitions. [2024-10-14 21:16:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:16:07,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2024-10-14 21:16:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:07,243 INFO L225 Difference]: With dead ends: 306 [2024-10-14 21:16:07,243 INFO L226 Difference]: Without dead ends: 301 [2024-10-14 21:16:07,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:07,244 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 131 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:07,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 462 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 7 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:16:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-14 21:16:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 273. [2024-10-14 21:16:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.556701030927835) internal successors, (302), 255 states have internal predecessors, (302), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 328 transitions. [2024-10-14 21:16:07,254 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 328 transitions. Word has length 52 [2024-10-14 21:16:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:07,254 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 328 transitions. [2024-10-14 21:16:07,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 328 transitions. [2024-10-14 21:16:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 21:16:07,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:07,255 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:07,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:07,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:07,456 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:07,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash -155011302, now seen corresponding path program 1 times [2024-10-14 21:16:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:07,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419627508] [2024-10-14 21:16:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555613508] [2024-10-14 21:16:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:07,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:07,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:07,488 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:07,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-14 21:16:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:07,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 21:16:07,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:07,608 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 21:16:07,712 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 21:16:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:07,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419627508] [2024-10-14 21:16:08,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555613508] [2024-10-14 21:16:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555613508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:08,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-14 21:16:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196133303] [2024-10-14 21:16:08,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:08,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 21:16:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 21:16:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-10-14 21:16:08,889 INFO L87 Difference]: Start difference. First operand 273 states and 328 transitions. Second operand has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:09,644 INFO L93 Difference]: Finished difference Result 321 states and 355 transitions. [2024-10-14 21:16:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 21:16:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-10-14 21:16:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:09,645 INFO L225 Difference]: With dead ends: 321 [2024-10-14 21:16:09,645 INFO L226 Difference]: Without dead ends: 320 [2024-10-14 21:16:09,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-14 21:16:09,646 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 197 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:09,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1064 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:16:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-14 21:16:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 273. [2024-10-14 21:16:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.5515463917525774) internal successors, (301), 255 states have internal predecessors, (301), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 327 transitions. [2024-10-14 21:16:09,656 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 327 transitions. Word has length 52 [2024-10-14 21:16:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:09,657 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 327 transitions. [2024-10-14 21:16:09,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 327 transitions. [2024-10-14 21:16:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-14 21:16:09,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:09,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:09,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-14 21:16:09,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-14 21:16:09,858 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:09,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash -510382951, now seen corresponding path program 1 times [2024-10-14 21:16:09,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:09,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451034273] [2024-10-14 21:16:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364422816] [2024-10-14 21:16:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:09,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:09,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:09,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-14 21:16:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:10,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 21:16:10,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:10,011 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 21:16:10,084 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 21:16:10,148 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 21:16:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:10,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451034273] [2024-10-14 21:16:27,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364422816] [2024-10-14 21:16:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364422816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:27,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:27,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-14 21:16:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701882165] [2024-10-14 21:16:27,664 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:27,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 21:16:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 21:16:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=307, Unknown=4, NotChecked=0, Total=380 [2024-10-14 21:16:27,665 INFO L87 Difference]: Start difference. First operand 273 states and 327 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:28,315 INFO L93 Difference]: Finished difference Result 320 states and 354 transitions. [2024-10-14 21:16:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 21:16:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-10-14 21:16:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:28,317 INFO L225 Difference]: With dead ends: 320 [2024-10-14 21:16:28,317 INFO L226 Difference]: Without dead ends: 319 [2024-10-14 21:16:28,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=140, Invalid=506, Unknown=4, NotChecked=0, Total=650 [2024-10-14 21:16:28,318 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 217 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:28,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 964 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 21:16:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-14 21:16:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 273. [2024-10-14 21:16:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.5463917525773196) internal successors, (300), 255 states have internal predecessors, (300), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 326 transitions. [2024-10-14 21:16:28,329 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 326 transitions. Word has length 53 [2024-10-14 21:16:28,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:28,329 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 326 transitions. [2024-10-14 21:16:28,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 326 transitions. [2024-10-14 21:16:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-14 21:16:28,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:28,330 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:28,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:28,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:28,531 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:28,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1357997820, now seen corresponding path program 1 times [2024-10-14 21:16:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907333542] [2024-10-14 21:16:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:28,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543784545] [2024-10-14 21:16:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:28,553 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:28,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-14 21:16:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 21:16:28,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:28,702 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 21:16:28,815 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 21:16:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:28,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:31,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907333542] [2024-10-14 21:16:31,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543784545] [2024-10-14 21:16:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543784545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:31,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:31,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-14 21:16:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359844198] [2024-10-14 21:16:31,475 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:31,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 21:16:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:31,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 21:16:31,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-10-14 21:16:31,477 INFO L87 Difference]: Start difference. First operand 273 states and 326 transitions. Second operand has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:32,514 INFO L93 Difference]: Finished difference Result 319 states and 353 transitions. [2024-10-14 21:16:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 21:16:32,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-10-14 21:16:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:32,516 INFO L225 Difference]: With dead ends: 319 [2024-10-14 21:16:32,516 INFO L226 Difference]: Without dead ends: 318 [2024-10-14 21:16:32,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-10-14 21:16:32,517 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 276 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:32,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 788 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:16:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-14 21:16:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 273. [2024-10-14 21:16:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.541237113402062) internal successors, (299), 255 states have internal predecessors, (299), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-14 21:16:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 325 transitions. [2024-10-14 21:16:32,527 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 325 transitions. Word has length 54 [2024-10-14 21:16:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:32,528 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 325 transitions. [2024-10-14 21:16:32,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 325 transitions. [2024-10-14 21:16:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 21:16:32,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:32,529 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:32,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:32,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:32,733 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:32,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash -851740421, now seen corresponding path program 1 times [2024-10-14 21:16:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:32,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039475992] [2024-10-14 21:16:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558696815] [2024-10-14 21:16:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:32,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:32,761 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:32,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-14 21:16:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:32,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-14 21:16:32,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:32,911 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 21:16:32,915 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 21:16:33,080 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 21:16:33,164 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 21:16:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:33,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:34,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:34,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039475992] [2024-10-14 21:16:34,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:34,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558696815] [2024-10-14 21:16:34,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558696815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:16:34,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 21:16:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2024-10-14 21:16:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000890528] [2024-10-14 21:16:34,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:34,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 21:16:34,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 21:16:34,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-10-14 21:16:34,121 INFO L87 Difference]: Start difference. First operand 273 states and 325 transitions. Second operand has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:16:42,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-14 21:16:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:43,777 INFO L93 Difference]: Finished difference Result 319 states and 355 transitions. [2024-10-14 21:16:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-14 21:16:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-10-14 21:16:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:43,779 INFO L225 Difference]: With dead ends: 319 [2024-10-14 21:16:43,779 INFO L226 Difference]: Without dead ends: 314 [2024-10-14 21:16:43,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-14 21:16:43,780 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 681 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:43,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1208 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1183 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2024-10-14 21:16:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-14 21:16:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 272. [2024-10-14 21:16:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 195 states have (on average 1.5025641025641026) internal successors, (293), 253 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 321 transitions. [2024-10-14 21:16:43,797 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 321 transitions. Word has length 55 [2024-10-14 21:16:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:43,798 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 321 transitions. [2024-10-14 21:16:43,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:16:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 321 transitions. [2024-10-14 21:16:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-14 21:16:43,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:43,800 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:43,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:44,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:44,004 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:44,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1511063493, now seen corresponding path program 1 times [2024-10-14 21:16:44,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929342306] [2024-10-14 21:16:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:44,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:16:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:44,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 21:16:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:44,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 21:16:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929342306] [2024-10-14 21:16:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929342306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:44,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:44,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:44,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829702488] [2024-10-14 21:16:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:44,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:44,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:44,438 INFO L87 Difference]: Start difference. First operand 272 states and 321 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:45,762 INFO L93 Difference]: Finished difference Result 295 states and 348 transitions. [2024-10-14 21:16:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2024-10-14 21:16:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:45,764 INFO L225 Difference]: With dead ends: 295 [2024-10-14 21:16:45,764 INFO L226 Difference]: Without dead ends: 294 [2024-10-14 21:16:45,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:45,764 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 117 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:45,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 446 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 21:16:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-10-14 21:16:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 273. [2024-10-14 21:16:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 196 states have (on average 1.5) internal successors, (294), 254 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 322 transitions. [2024-10-14 21:16:45,779 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 322 transitions. Word has length 57 [2024-10-14 21:16:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:45,779 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 322 transitions. [2024-10-14 21:16:45,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 322 transitions. [2024-10-14 21:16:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-14 21:16:45,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:45,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:45,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-14 21:16:45,781 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:45,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1816212829, now seen corresponding path program 1 times [2024-10-14 21:16:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274317593] [2024-10-14 21:16:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:46,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:16:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:46,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274317593] [2024-10-14 21:16:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274317593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701537628] [2024-10-14 21:16:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:46,141 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:46,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-14 21:16:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:46,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 21:16:46,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:46,290 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 21:16:46,422 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 21:16:46,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 21:16:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:46,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701537628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:16:46,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 21:16:46,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 17 [2024-10-14 21:16:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371077531] [2024-10-14 21:16:46,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:46,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 21:16:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 21:16:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-10-14 21:16:46,617 INFO L87 Difference]: Start difference. First operand 273 states and 322 transitions. Second operand has 18 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:47,366 INFO L93 Difference]: Finished difference Result 312 states and 347 transitions. [2024-10-14 21:16:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 21:16:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2024-10-14 21:16:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:47,368 INFO L225 Difference]: With dead ends: 312 [2024-10-14 21:16:47,368 INFO L226 Difference]: Without dead ends: 310 [2024-10-14 21:16:47,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-10-14 21:16:47,368 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 399 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:47,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 878 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 21:16:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-14 21:16:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 271. [2024-10-14 21:16:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.4795918367346939) internal successors, (290), 252 states have internal predecessors, (290), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 318 transitions. [2024-10-14 21:16:47,383 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 318 transitions. Word has length 57 [2024-10-14 21:16:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:47,384 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 318 transitions. [2024-10-14 21:16:47,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 318 transitions. [2024-10-14 21:16:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 21:16:47,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:47,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:47,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:47,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:47,585 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:47,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash -401671905, now seen corresponding path program 1 times [2024-10-14 21:16:47,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:47,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485970378] [2024-10-14 21:16:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:47,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608488883] [2024-10-14 21:16:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:47,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:47,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:47,609 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:47,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-14 21:16:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:47,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:16:47,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:47,733 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 21:16:47,737 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 21:16:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:47,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:47,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485970378] [2024-10-14 21:16:47,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:47,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608488883] [2024-10-14 21:16:47,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608488883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:47,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:47,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606030480] [2024-10-14 21:16:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:47,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:47,965 INFO L87 Difference]: Start difference. First operand 271 states and 318 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:48,474 INFO L93 Difference]: Finished difference Result 297 states and 343 transitions. [2024-10-14 21:16:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:16:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-10-14 21:16:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:48,475 INFO L225 Difference]: With dead ends: 297 [2024-10-14 21:16:48,475 INFO L226 Difference]: Without dead ends: 296 [2024-10-14 21:16:48,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:16:48,476 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 139 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:48,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 518 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:16:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-14 21:16:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 272. [2024-10-14 21:16:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 197 states have (on average 1.4771573604060915) internal successors, (291), 253 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 319 transitions. [2024-10-14 21:16:48,490 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 319 transitions. Word has length 58 [2024-10-14 21:16:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:48,490 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 319 transitions. [2024-10-14 21:16:48,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 319 transitions. [2024-10-14 21:16:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 21:16:48,491 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:48,491 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:48,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:48,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-14 21:16:48,692 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:48,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 468022976, now seen corresponding path program 1 times [2024-10-14 21:16:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:48,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628012905] [2024-10-14 21:16:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:49,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 21:16:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628012905] [2024-10-14 21:16:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628012905] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307814214] [2024-10-14 21:16:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:49,018 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:49,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-14 21:16:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:49,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-14 21:16:49,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:49,162 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 21:16:49,271 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 21:16:49,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 21:16:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:49,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307814214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:16:49,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 21:16:49,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 21:16:49,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822594875] [2024-10-14 21:16:49,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:49,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 21:16:49,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 21:16:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-14 21:16:49,490 INFO L87 Difference]: Start difference. First operand 272 states and 319 transitions. Second operand has 18 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:50,212 INFO L93 Difference]: Finished difference Result 338 states and 349 transitions. [2024-10-14 21:16:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 21:16:50,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-10-14 21:16:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:50,213 INFO L225 Difference]: With dead ends: 338 [2024-10-14 21:16:50,213 INFO L226 Difference]: Without dead ends: 337 [2024-10-14 21:16:50,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-10-14 21:16:50,214 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 446 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:50,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 936 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 21:16:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-10-14 21:16:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2024-10-14 21:16:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 197 states have (on average 1.467005076142132) internal successors, (289), 253 states have internal predecessors, (289), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 317 transitions. [2024-10-14 21:16:50,226 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 317 transitions. Word has length 58 [2024-10-14 21:16:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:50,226 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 317 transitions. [2024-10-14 21:16:50,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 317 transitions. [2024-10-14 21:16:50,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-14 21:16:50,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:50,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:50,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:50,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-14 21:16:50,432 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:50,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 433072903, now seen corresponding path program 1 times [2024-10-14 21:16:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746991305] [2024-10-14 21:16:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:50,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:16:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:50,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 21:16:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:50,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 21:16:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:50,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:50,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746991305] [2024-10-14 21:16:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746991305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:50,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:50,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206772695] [2024-10-14 21:16:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:50,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:50,588 INFO L87 Difference]: Start difference. First operand 272 states and 317 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:50,839 INFO L93 Difference]: Finished difference Result 294 states and 340 transitions. [2024-10-14 21:16:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-10-14 21:16:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:50,841 INFO L225 Difference]: With dead ends: 294 [2024-10-14 21:16:50,841 INFO L226 Difference]: Without dead ends: 288 [2024-10-14 21:16:50,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 21:16:50,842 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 79 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:50,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 381 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:16:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-14 21:16:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 278. [2024-10-14 21:16:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.4532019704433496) internal successors, (295), 259 states have internal predecessors, (295), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 323 transitions. [2024-10-14 21:16:50,854 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 323 transitions. Word has length 59 [2024-10-14 21:16:50,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:50,855 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 323 transitions. [2024-10-14 21:16:50,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:16:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 323 transitions. [2024-10-14 21:16:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-14 21:16:50,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:50,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:50,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-10-14 21:16:50,857 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:50,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:50,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1623810495, now seen corresponding path program 1 times [2024-10-14 21:16:50,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:50,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023598695] [2024-10-14 21:16:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479052567] [2024-10-14 21:16:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:50,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:50,883 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:50,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-14 21:16:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:51,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 21:16:51,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:51,051 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 21:16:51,152 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 21:16:51,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:16:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:51,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:51,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023598695] [2024-10-14 21:16:51,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479052567] [2024-10-14 21:16:51,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479052567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:51,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:51,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-14 21:16:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654013686] [2024-10-14 21:16:51,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:51,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 21:16:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 21:16:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-14 21:16:51,850 INFO L87 Difference]: Start difference. First operand 278 states and 323 transitions. Second operand has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:52,230 INFO L93 Difference]: Finished difference Result 302 states and 334 transitions. [2024-10-14 21:16:52,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 21:16:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-10-14 21:16:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:52,232 INFO L225 Difference]: With dead ends: 302 [2024-10-14 21:16:52,232 INFO L226 Difference]: Without dead ends: 301 [2024-10-14 21:16:52,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-10-14 21:16:52,232 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 193 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:52,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 718 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-14 21:16:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 278. [2024-10-14 21:16:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.4482758620689655) internal successors, (294), 259 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 322 transitions. [2024-10-14 21:16:52,243 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 322 transitions. Word has length 59 [2024-10-14 21:16:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:52,243 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 322 transitions. [2024-10-14 21:16:52,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 322 transitions. [2024-10-14 21:16:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 21:16:52,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:52,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:52,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-14 21:16:52,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-14 21:16:52,445 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:52,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1201482078, now seen corresponding path program 1 times [2024-10-14 21:16:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690705754] [2024-10-14 21:16:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:52,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241684221] [2024-10-14 21:16:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:52,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:52,471 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:52,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-14 21:16:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:52,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 21:16:52,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:52,607 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 21:16:52,716 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 21:16:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:52,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690705754] [2024-10-14 21:16:55,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241684221] [2024-10-14 21:16:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241684221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:55,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:16:55,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-14 21:16:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374054984] [2024-10-14 21:16:55,787 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:55,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 21:16:55,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 21:16:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2024-10-14 21:16:55,788 INFO L87 Difference]: Start difference. First operand 278 states and 322 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:56,365 INFO L93 Difference]: Finished difference Result 301 states and 333 transitions. [2024-10-14 21:16:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 21:16:56,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2024-10-14 21:16:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:56,367 INFO L225 Difference]: With dead ends: 301 [2024-10-14 21:16:56,367 INFO L226 Difference]: Without dead ends: 300 [2024-10-14 21:16:56,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=105, Invalid=446, Unknown=1, NotChecked=0, Total=552 [2024-10-14 21:16:56,367 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 162 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:56,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1020 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-10-14 21:16:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 278. [2024-10-14 21:16:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.4433497536945812) internal successors, (293), 259 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-14 21:16:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 321 transitions. [2024-10-14 21:16:56,378 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 321 transitions. Word has length 60 [2024-10-14 21:16:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:56,378 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 321 transitions. [2024-10-14 21:16:56,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 321 transitions. [2024-10-14 21:16:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 21:16:56,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:56,379 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:56,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:56,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-14 21:16:56,580 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-14 21:16:56,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1408761377, now seen corresponding path program 1 times [2024-10-14 21:16:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:56,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181369148] [2024-10-14 21:16:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:56,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495009263] [2024-10-14 21:16:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:56,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:56,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:56,609 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:56,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-14 21:16:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:56,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 21:16:56,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:56,754 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 21:16:56,864 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 21:16:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:56,986 INFO L311 TraceCheckSpWp]: Computing backward predicates...