./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-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 ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:17:43,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:17:43,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:17:43,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:17:43,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:17:44,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:17:44,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:17:44,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:17:44,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:17:44,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:17:44,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:17:44,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:17:44,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:17:44,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:17:44,032 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:17:44,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:17:44,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:17:44,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:17:44,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:17:44,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:17:44,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:17:44,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:17:44,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:17:44,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:17:44,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:17:44,038 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:17:44,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:17:44,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:17:44,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:17:44,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:17:44,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:17:44,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:17:44,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:17:44,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:17:44,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:44,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:17:44,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:17:44,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:17:44,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:17:44,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:17:44,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:17:44,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:17:44,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:17:44,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:17:44,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 [2024-11-09 12:17:44,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:17:44,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:17:44,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:17:44,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:17:44,397 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:17:44,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-11-09 12:17:46,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:17:46,297 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:17:46,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-11-09 12:17:46,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bff7b08/20d778bb615045d08ecbeacc4f5f4781/FLAG7d31db9b4 [2024-11-09 12:17:46,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bff7b08/20d778bb615045d08ecbeacc4f5f4781 [2024-11-09 12:17:46,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:17:46,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:17:46,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:46,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:17:46,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:17:46,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6940e3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46, skipping insertion in model container [2024-11-09 12:17:46,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:17:46,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:46,625 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:17:46,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:46,673 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:17:46,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46 WrapperNode [2024-11-09 12:17:46,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:46,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:46,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:17:46,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:17:46,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,716 INFO L138 Inliner]: procedures = 16, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-09 12:17:46,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:46,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:17:46,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:17:46,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:17:46,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,761 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 10, 4, 5]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-11-09 12:17:46,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:17:46,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:17:46,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:17:46,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:17:46,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (1/1) ... [2024-11-09 12:17:46,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:46,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 12:17:46,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 12:17:46,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:17:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:17:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:17:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:17:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:17:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:17:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:17:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:17:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-09 12:17:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-09 12:17:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:17:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:17:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:17:47,015 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:17:47,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:17:47,295 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-09 12:17:47,299 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:17:47,320 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:17:47,323 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:17:47,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:47 BoogieIcfgContainer [2024-11-09 12:17:47,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:17:47,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:17:47,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:17:47,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:17:47,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:17:46" (1/3) ... [2024-11-09 12:17:47,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385b5595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:47, skipping insertion in model container [2024-11-09 12:17:47,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:46" (2/3) ... [2024-11-09 12:17:47,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385b5595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:47, skipping insertion in model container [2024-11-09 12:17:47,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:47" (3/3) ... [2024-11-09 12:17:47,335 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps2-ll.c [2024-11-09 12:17:47,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:17:47,360 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-09 12:17:47,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:17:47,433 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;@38be637f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:17:47,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 12:17:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:17:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 12:17:47,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:47,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 12:17:47,444 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 19 more)] === [2024-11-09 12:17:47,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash 891789709, now seen corresponding path program 1 times [2024-11-09 12:17:47,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:47,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94396856] [2024-11-09 12:17:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:47,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547382876] [2024-11-09 12:17:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:47,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:47,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:17:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:47,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:17:47,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:47,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:47,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94396856] [2024-11-09 12:17:47,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547382876] [2024-11-09 12:17:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547382876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:47,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:47,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546344340] [2024-11-09 12:17:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:47,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:48,030 INFO L87 Difference]: Start difference. First operand has 67 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:48,253 INFO L93 Difference]: Finished difference Result 172 states and 189 transitions. [2024-11-09 12:17:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 12:17:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:48,265 INFO L225 Difference]: With dead ends: 172 [2024-11-09 12:17:48,265 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 12:17:48,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:48,277 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 75 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:48,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 257 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 12:17:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2024-11-09 12:17:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 68 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-09 12:17:48,347 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 6 [2024-11-09 12:17:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:48,347 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-09 12:17:48,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-09 12:17:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:17:48,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:48,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:48,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:17:48,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 12:17:48,550 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 19 more)] === [2024-11-09 12:17:48,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:48,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1983546833, now seen corresponding path program 1 times [2024-11-09 12:17:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:48,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789189540] [2024-11-09 12:17:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789189540] [2024-11-09 12:17:49,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789189540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:49,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:49,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013757585] [2024-11-09 12:17:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:49,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:49,018 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:49,218 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2024-11-09 12:17:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 12:17:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:49,220 INFO L225 Difference]: With dead ends: 98 [2024-11-09 12:17:49,221 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 12:17:49,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:49,223 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 65 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:49,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 231 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:17:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 12:17:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2024-11-09 12:17:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 68 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-09 12:17:49,235 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 8 [2024-11-09 12:17:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:49,235 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-09 12:17:49,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-09 12:17:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 12:17:49,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:49,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:49,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:17:49,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:49,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash 776975057, now seen corresponding path program 1 times [2024-11-09 12:17:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702961442] [2024-11-09 12:17:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:49,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702961442] [2024-11-09 12:17:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702961442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369798655] [2024-11-09 12:17:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:49,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:49,523 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:49,783 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-09 12:17:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:49,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2024-11-09 12:17:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:49,785 INFO L225 Difference]: With dead ends: 96 [2024-11-09 12:17:49,785 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 12:17:49,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:49,787 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 68 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:49,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 240 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:17:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 12:17:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2024-11-09 12:17:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.565217391304348) internal successors, (72), 68 states have internal predecessors, (72), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-09 12:17:49,797 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 10 [2024-11-09 12:17:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:49,797 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-09 12:17:49,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-09 12:17:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 12:17:49,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:49,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:49,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:17:49,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:49,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1683576938, now seen corresponding path program 1 times [2024-11-09 12:17:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140180753] [2024-11-09 12:17:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140180753] [2024-11-09 12:17:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140180753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537228500] [2024-11-09 12:17:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:50,034 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:50,519 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-09 12:17:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 11 [2024-11-09 12:17:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:50,521 INFO L225 Difference]: With dead ends: 95 [2024-11-09 12:17:50,521 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 12:17:50,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:50,523 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:50,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 231 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 12:17:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2024-11-09 12:17:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 68 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2024-11-09 12:17:50,533 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 11 [2024-11-09 12:17:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:50,533 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2024-11-09 12:17:50,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2024-11-09 12:17:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 12:17:50,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:50,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:50,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 12:17:50,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -651277453, now seen corresponding path program 1 times [2024-11-09 12:17:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859352077] [2024-11-09 12:17:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859352077] [2024-11-09 12:17:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859352077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774674133] [2024-11-09 12:17:50,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:50,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:50,715 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:50,926 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2024-11-09 12:17:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 12 [2024-11-09 12:17:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:50,928 INFO L225 Difference]: With dead ends: 98 [2024-11-09 12:17:50,928 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 12:17:50,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:50,930 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 51 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:50,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 266 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:17:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 12:17:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2024-11-09 12:17:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 68 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-09 12:17:50,948 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 12 [2024-11-09 12:17:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:50,948 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-09 12:17:50,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-09 12:17:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 12:17:50,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:50,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:50,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 12:17:50,949 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:50,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1285235512, now seen corresponding path program 1 times [2024-11-09 12:17:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066542740] [2024-11-09 12:17:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066542740] [2024-11-09 12:17:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066542740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834647942] [2024-11-09 12:17:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:51,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:51,335 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2024-11-09 12:17:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:51,807 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2024-11-09 12:17:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2024-11-09 12:17:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:51,809 INFO L225 Difference]: With dead ends: 89 [2024-11-09 12:17:51,810 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 12:17:51,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:51,811 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:51,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 251 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 12:17:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2024-11-09 12:17:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.5) internal successors, (69), 68 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-09 12:17:51,825 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 13 [2024-11-09 12:17:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:51,825 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-09 12:17:51,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2024-11-09 12:17:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-09 12:17:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 12:17:51,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:51,826 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] [2024-11-09 12:17:51,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 12:17:51,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:51,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 696246341, now seen corresponding path program 1 times [2024-11-09 12:17:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8859994] [2024-11-09 12:17:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:17:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:52,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8859994] [2024-11-09 12:17:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8859994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437421548] [2024-11-09 12:17:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:52,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:52,060 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:52,138 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-11-09 12:17:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2024-11-09 12:17:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:52,140 INFO L225 Difference]: With dead ends: 96 [2024-11-09 12:17:52,140 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 12:17:52,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:52,141 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 38 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:52,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 269 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:17:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 12:17:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2024-11-09 12:17:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 69 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-09 12:17:52,149 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 21 [2024-11-09 12:17:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:52,150 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-09 12:17:52,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-09 12:17:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 12:17:52,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:52,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:52,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 12:17:52,151 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:52,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 108800176, now seen corresponding path program 1 times [2024-11-09 12:17:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:52,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777543480] [2024-11-09 12:17:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:52,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:17:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:52,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:52,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777543480] [2024-11-09 12:17:52,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777543480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:52,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:52,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:52,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240927812] [2024-11-09 12:17:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:52,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:52,360 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:52,438 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2024-11-09 12:17:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2024-11-09 12:17:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:52,440 INFO L225 Difference]: With dead ends: 95 [2024-11-09 12:17:52,440 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 12:17:52,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:17:52,441 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:52,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 271 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:17:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 12:17:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2024-11-09 12:17:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2024-11-09 12:17:52,450 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 22 [2024-11-09 12:17:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:52,451 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2024-11-09 12:17:52,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2024-11-09 12:17:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 12:17:52,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:52,452 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] [2024-11-09 12:17:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 12:17:52,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:52,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash -922161753, now seen corresponding path program 1 times [2024-11-09 12:17:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142899696] [2024-11-09 12:17:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:17:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142899696] [2024-11-09 12:17:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142899696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130729919] [2024-11-09 12:17:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:52,584 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:52,651 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2024-11-09 12:17:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23 [2024-11-09 12:17:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:52,652 INFO L225 Difference]: With dead ends: 94 [2024-11-09 12:17:52,652 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 12:17:52,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:52,653 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 34 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:52,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 249 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:17:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 12:17:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2024-11-09 12:17:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.46) internal successors, (73), 72 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:17:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-09 12:17:52,660 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 23 [2024-11-09 12:17:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:52,660 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-09 12:17:52,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-09 12:17:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 12:17:52,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:52,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:52,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 12:17:52,662 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:52,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1477304413, now seen corresponding path program 1 times [2024-11-09 12:17:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452910043] [2024-11-09 12:17:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744835559] [2024-11-09 12:17:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:52,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:52,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:17:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:52,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:17:52,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:52,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:52,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452910043] [2024-11-09 12:17:52,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744835559] [2024-11-09 12:17:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744835559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:52,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:17:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35919865] [2024-11-09 12:17:52,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:52,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:17:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:17:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:17:52,815 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:52,934 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-11-09 12:17:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 24 [2024-11-09 12:17:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:52,937 INFO L225 Difference]: With dead ends: 96 [2024-11-09 12:17:52,937 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 12:17:52,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:52,938 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:52,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 136 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 12:17:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2024-11-09 12:17:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 75 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2024-11-09 12:17:52,946 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 24 [2024-11-09 12:17:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:52,946 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2024-11-09 12:17:52,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2024-11-09 12:17:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 12:17:52,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:52,948 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] [2024-11-09 12:17:52,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 12:17:53,152 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,SelfDestructingSolverStorable9 [2024-11-09 12:17:53,153 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:53,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1434178807, now seen corresponding path program 1 times [2024-11-09 12:17:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079006560] [2024-11-09 12:17:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:53,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:17:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079006560] [2024-11-09 12:17:53,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079006560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:53,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110632719] [2024-11-09 12:17:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:53,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:53,494 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:53,613 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2024-11-09 12:17:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:53,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 25 [2024-11-09 12:17:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:53,615 INFO L225 Difference]: With dead ends: 87 [2024-11-09 12:17:53,615 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 12:17:53,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:17:53,616 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 24 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:53,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 269 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 12:17:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-11-09 12:17:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-09 12:17:53,622 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 25 [2024-11-09 12:17:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:53,622 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-09 12:17:53,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-09 12:17:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:17:53,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:53,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:53,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 12:17:53,623 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:53,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1944632865, now seen corresponding path program 1 times [2024-11-09 12:17:53,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331188625] [2024-11-09 12:17:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:53,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:17:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:53,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 12:17:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:53,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331188625] [2024-11-09 12:17:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331188625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:53,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:53,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:53,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112315934] [2024-11-09 12:17:53,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:53,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:53,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:53,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:53,758 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:53,910 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2024-11-09 12:17:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 26 [2024-11-09 12:17:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:53,912 INFO L225 Difference]: With dead ends: 93 [2024-11-09 12:17:53,912 INFO L226 Difference]: Without dead ends: 91 [2024-11-09 12:17:53,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:53,913 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:53,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 128 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-09 12:17:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-09 12:17:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 78 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-09 12:17:53,923 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 26 [2024-11-09 12:17:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:53,923 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-09 12:17:53,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-09 12:17:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:17:53,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:53,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:53,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:17:53,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:53,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1509869964, now seen corresponding path program 1 times [2024-11-09 12:17:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245322806] [2024-11-09 12:17:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:17:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245322806] [2024-11-09 12:17:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245322806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:54,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:54,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108584497] [2024-11-09 12:17:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:54,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:54,213 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:54,321 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2024-11-09 12:17:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:54,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 26 [2024-11-09 12:17:54,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:54,322 INFO L225 Difference]: With dead ends: 89 [2024-11-09 12:17:54,322 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 12:17:54,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:17:54,323 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 23 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:54,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 274 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 12:17:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 12:17:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.396551724137931) internal successors, (81), 79 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-09 12:17:54,329 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 26 [2024-11-09 12:17:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:54,330 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-09 12:17:54,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-09 12:17:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 12:17:54,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:54,331 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] [2024-11-09 12:17:54,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 12:17:54,331 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:54,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -481408159, now seen corresponding path program 1 times [2024-11-09 12:17:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377000280] [2024-11-09 12:17:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:17:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 12:17:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:54,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377000280] [2024-11-09 12:17:54,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377000280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:54,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:54,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:17:54,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340147660] [2024-11-09 12:17:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:54,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:17:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:17:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:54,479 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:54,639 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2024-11-09 12:17:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:17:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 28 [2024-11-09 12:17:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:54,640 INFO L225 Difference]: With dead ends: 93 [2024-11-09 12:17:54,641 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 12:17:54,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:17:54,641 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:54,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 148 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 12:17:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2024-11-09 12:17:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 80 states have internal predecessors, (82), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-09 12:17:54,649 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 28 [2024-11-09 12:17:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:54,650 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-09 12:17:54,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-09 12:17:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 12:17:54,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:54,654 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] [2024-11-09 12:17:54,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 12:17:54,655 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:54,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2038750995, now seen corresponding path program 1 times [2024-11-09 12:17:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:54,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863286673] [2024-11-09 12:17:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:17:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 12:17:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863286673] [2024-11-09 12:17:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863286673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198148322] [2024-11-09 12:17:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:54,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:54,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:54,914 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:55,192 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-11-09 12:17:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 29 [2024-11-09 12:17:55,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:55,194 INFO L225 Difference]: With dead ends: 93 [2024-11-09 12:17:55,194 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 12:17:55,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:55,197 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 53 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:55,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 123 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:17:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 12:17:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-11-09 12:17:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 81 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-09 12:17:55,205 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 29 [2024-11-09 12:17:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:55,206 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-09 12:17:55,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-09 12:17:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:17:55,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:55,208 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] [2024-11-09 12:17:55,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 12:17:55,209 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:55,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1123097223, now seen corresponding path program 1 times [2024-11-09 12:17:55,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:55,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25632071] [2024-11-09 12:17:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776982945] [2024-11-09 12:17:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:55,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:55,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:55,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:17:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:55,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 12:17:55,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:55,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:17:55,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:17:55,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 12:17:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:55,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:17:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25632071] [2024-11-09 12:17:55,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776982945] [2024-11-09 12:17:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776982945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:17:55,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:17:55,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-09 12:17:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452516942] [2024-11-09 12:17:55,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:17:55,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:17:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:17:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:17:55,728 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:56,032 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2024-11-09 12:17:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 12:17:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-09 12:17:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:56,034 INFO L225 Difference]: With dead ends: 93 [2024-11-09 12:17:56,034 INFO L226 Difference]: Without dead ends: 91 [2024-11-09 12:17:56,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-09 12:17:56,035 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 146 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:56,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:17:56,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-09 12:17:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2024-11-09 12:17:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.35) internal successors, (81), 79 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-09 12:17:56,044 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 30 [2024-11-09 12:17:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:56,045 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-09 12:17:56,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-09 12:17:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:17:56,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:56,048 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] [2024-11-09 12:17:56,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 12:17:56,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:56,250 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:56,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1223228643, now seen corresponding path program 1 times [2024-11-09 12:17:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:56,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818334866] [2024-11-09 12:17:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:56,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:17:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:56,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 12:17:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:56,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:56,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818334866] [2024-11-09 12:17:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818334866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:56,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:56,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:17:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063149690] [2024-11-09 12:17:56,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:56,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:17:56,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:17:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:56,542 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:56,784 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2024-11-09 12:17:56,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:17:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 30 [2024-11-09 12:17:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:56,787 INFO L225 Difference]: With dead ends: 91 [2024-11-09 12:17:56,787 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 12:17:56,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:56,788 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:56,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 155 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:17:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 12:17:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-09 12:17:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 80 states have internal predecessors, (82), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 12:17:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-09 12:17:56,800 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 30 [2024-11-09 12:17:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:56,800 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-09 12:17:56,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:17:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-09 12:17:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 12:17:56,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:56,801 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] [2024-11-09 12:17:56,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 12:17:56,801 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:17:56,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash -456275482, now seen corresponding path program 1 times [2024-11-09 12:17:56,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:56,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12909215] [2024-11-09 12:17:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480827715] [2024-11-09 12:17:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:56,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:56,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:56,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:17:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:56,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 12:17:56,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:56,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:57,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:17:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:57,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:17:59,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12909215] [2024-11-09 12:17:59,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480827715] [2024-11-09 12:17:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480827715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:17:59,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:17:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 12:17:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435281189] [2024-11-09 12:17:59,514 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:17:59,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:17:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:17:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2024-11-09 12:17:59,516 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 10 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:59,850 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2024-11-09 12:17:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:17:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 31 [2024-11-09 12:17:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:59,852 INFO L225 Difference]: With dead ends: 127 [2024-11-09 12:17:59,852 INFO L226 Difference]: Without dead ends: 126 [2024-11-09 12:17:59,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2024-11-09 12:17:59,853 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 97 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:59,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 284 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:17:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-09 12:17:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2024-11-09 12:17:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.358974358974359) internal successors, (106), 98 states have internal predecessors, (106), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:17:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2024-11-09 12:17:59,866 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 31 [2024-11-09 12:17:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:59,867 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2024-11-09 12:17:59,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:17:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2024-11-09 12:17:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 12:17:59,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:59,868 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] [2024-11-09 12:17:59,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 12:18:00,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 12:18:00,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:00,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -734617681, now seen corresponding path program 1 times [2024-11-09 12:18:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:00,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732966691] [2024-11-09 12:18:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-09 12:18:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732966691] [2024-11-09 12:18:00,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732966691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:00,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:00,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:00,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399289013] [2024-11-09 12:18:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:00,464 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:00,939 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2024-11-09 12:18:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 31 [2024-11-09 12:18:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:00,943 INFO L225 Difference]: With dead ends: 113 [2024-11-09 12:18:00,943 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 12:18:00,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:00,944 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:00,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 148 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 12:18:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-09 12:18:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 69 states have (on average 1.391304347826087) internal successors, (96), 89 states have internal predecessors, (96), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 12:18:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2024-11-09 12:18:00,952 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 31 [2024-11-09 12:18:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:00,952 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2024-11-09 12:18:00,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2024-11-09 12:18:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 12:18:00,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:00,953 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] [2024-11-09 12:18:00,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 12:18:00,954 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:00,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1259637989, now seen corresponding path program 1 times [2024-11-09 12:18:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:00,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872159296] [2024-11-09 12:18:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:18:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:01,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872159296] [2024-11-09 12:18:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872159296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380161322] [2024-11-09 12:18:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:01,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:01,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:18:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 12:18:01,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:01,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:01,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:01,753 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 17 treesize of output 9 [2024-11-09 12:18:01,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-09 12:18:01,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:18:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:01,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380161322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:02,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:18:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2024-11-09 12:18:02,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404249434] [2024-11-09 12:18:02,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:02,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 12:18:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 12:18:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-09 12:18:02,053 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 24 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:18:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:02,820 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2024-11-09 12:18:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 12:18:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-09 12:18:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:02,822 INFO L225 Difference]: With dead ends: 153 [2024-11-09 12:18:02,822 INFO L226 Difference]: Without dead ends: 151 [2024-11-09 12:18:02,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 12:18:02,824 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 245 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:02,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 512 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-09 12:18:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 125. [2024-11-09 12:18:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 110 states have internal predecessors, (126), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-09 12:18:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-09 12:18:02,837 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 32 [2024-11-09 12:18:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:02,837 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-09 12:18:02,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:18:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-09 12:18:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 12:18:02,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:02,838 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] [2024-11-09 12:18:02,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 12:18:03,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,040 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:03,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -394071928, now seen corresponding path program 1 times [2024-11-09 12:18:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855396356] [2024-11-09 12:18:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:18:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855396356] [2024-11-09 12:18:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855396356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692859157] [2024-11-09 12:18:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:03,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:03,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:18:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 12:18:03,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:03,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:03,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:03,718 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 17 treesize of output 9 [2024-11-09 12:18:03,758 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 [2024-11-09 12:18:03,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:18:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692859157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:03,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:18:03,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2024-11-09 12:18:03,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592158628] [2024-11-09 12:18:03,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 12:18:03,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 12:18:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-09 12:18:03,960 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 24 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:18:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:04,319 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-11-09 12:18:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 12:18:04,320 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 12:18:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:04,321 INFO L225 Difference]: With dead ends: 134 [2024-11-09 12:18:04,321 INFO L226 Difference]: Without dead ends: 133 [2024-11-09 12:18:04,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2024-11-09 12:18:04,322 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:04,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 403 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-09 12:18:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2024-11-09 12:18:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 89 states have (on average 1.404494382022472) internal successors, (125), 110 states have internal predecessors, (125), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-09 12:18:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2024-11-09 12:18:04,334 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 33 [2024-11-09 12:18:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,334 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2024-11-09 12:18:04,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:18:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2024-11-09 12:18:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 12:18:04,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,336 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] [2024-11-09 12:18:04,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:04,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:04,540 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:04,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,541 INFO L85 PathProgramCache]: Analyzing trace with hash 668672189, now seen corresponding path program 1 times [2024-11-09 12:18:04,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271607904] [2024-11-09 12:18:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458249308] [2024-11-09 12:18:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:04,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:04,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:18:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 12:18:04,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:04,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:04,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:04,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:18:04,934 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 [2024-11-09 12:18:04,970 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 33 treesize of output 17 [2024-11-09 12:18:05,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 12:18:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:05,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271607904] [2024-11-09 12:18:15,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458249308] [2024-11-09 12:18:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458249308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:15,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:18:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-09 12:18:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243790666] [2024-11-09 12:18:15,102 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:15,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 12:18:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 12:18:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=284, Unknown=1, NotChecked=0, Total=342 [2024-11-09 12:18:15,104 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:15,425 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2024-11-09 12:18:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:18:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 34 [2024-11-09 12:18:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:15,427 INFO L225 Difference]: With dead ends: 132 [2024-11-09 12:18:15,427 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 12:18:15,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=118, Invalid=481, Unknown=1, NotChecked=0, Total=600 [2024-11-09 12:18:15,429 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 73 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:15,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 335 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 12:18:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2024-11-09 12:18:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 89 states have (on average 1.3932584269662922) internal successors, (124), 110 states have internal predecessors, (124), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-09 12:18:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2024-11-09 12:18:15,438 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 34 [2024-11-09 12:18:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:15,438 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2024-11-09 12:18:15,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2024-11-09 12:18:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 12:18:15,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:15,439 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] [2024-11-09 12:18:15,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:15,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:15,644 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:15,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -745998550, now seen corresponding path program 1 times [2024-11-09 12:18:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943903188] [2024-11-09 12:18:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:16,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:18:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:16,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943903188] [2024-11-09 12:18:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943903188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623366546] [2024-11-09 12:18:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:16,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:16,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:16,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:18:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:16,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 12:18:16,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:16,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:16,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:16,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:18:16,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:18:16,390 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 [2024-11-09 12:18:16,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:18:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:16,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623366546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:31,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2024-11-09 12:18:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116620712] [2024-11-09 12:18:31,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:31,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 12:18:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 12:18:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=431, Unknown=2, NotChecked=0, Total=506 [2024-11-09 12:18:31,314 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand has 17 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:31,648 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2024-11-09 12:18:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:18:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-09 12:18:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:31,650 INFO L225 Difference]: With dead ends: 132 [2024-11-09 12:18:31,650 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 12:18:31,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=124, Invalid=630, Unknown=2, NotChecked=0, Total=756 [2024-11-09 12:18:31,651 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 88 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:31,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 421 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 12:18:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2024-11-09 12:18:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 110 states have internal predecessors, (123), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-09 12:18:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2024-11-09 12:18:31,661 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 35 [2024-11-09 12:18:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:31,661 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2024-11-09 12:18:31,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2024-11-09 12:18:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:18:31,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:31,662 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] [2024-11-09 12:18:31,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:31,863 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,SelfDestructingSolverStorable22 [2024-11-09 12:18:31,863 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-09 12:18:31,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1651118497, now seen corresponding path program 1 times [2024-11-09 12:18:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015173115] [2024-11-09 12:18:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat