./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-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_ps5-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:17:52,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:17:52,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:17:52,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:17:52,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:17:52,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:17:52,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:17:52,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:17:52,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:17:52,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:17:52,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:17:52,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:17:52,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:17:52,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:17:52,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:17:52,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:17:52,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:17:52,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:17:52,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:17:52,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:17:52,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:17:52,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:17:52,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:17:52,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:17:52,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:17:52,782 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:17:52,783 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:17:52,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:17:52,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:17:52,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:17:52,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:17:52,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:17:52,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:17:52,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:17:52,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:52,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:17:52,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:17:52,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:17:52,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:17:52,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:17:52,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:17:52,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:17:52,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:17:52,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:17:52,789 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe [2024-11-09 12:17:53,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:17:53,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:17:53,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:17:53,102 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:17:53,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:17:53,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-11-09 12:17:54,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:17:54,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:17:54,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-11-09 12:17:54,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57be77d1d/d703ada21f6747f3bc775294e71c2edd/FLAG206349578 [2024-11-09 12:17:55,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57be77d1d/d703ada21f6747f3bc775294e71c2edd [2024-11-09 12:17:55,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:17:55,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:17:55,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:55,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:17:55,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:17:55,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b0d968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55, skipping insertion in model container [2024-11-09 12:17:55,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:17:55,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:55,457 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:17:55,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:55,513 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:17:55,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55 WrapperNode [2024-11-09 12:17:55,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:55,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:55,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:17:55,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:17:55,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,565 INFO L138 Inliner]: procedures = 16, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-11-09 12:17:55,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:55,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:17:55,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:17:55,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:17:55,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,642 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 36, 4, 5, 4]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 1, 2, 2]. [2024-11-09 12:17:55,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:17:55,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:17:55,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:17:55,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:17:55,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (1/1) ... [2024-11-09 12:17:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:55,719 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 12:17:55,723 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 12:17:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:17:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:17:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:17:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:17:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:17:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:17:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:17:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:17:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:17:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:17:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:17:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:17:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:17:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:17:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:17:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:17:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:17:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:17:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:17:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:17:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:17:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-11-09 12:17:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-11-09 12:17:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:17:55,902 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:17:55,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:17:57,420 INFO L? ?]: Removed 370 outVars from TransFormulas that were not future-live. [2024-11-09 12:17:57,421 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:17:57,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:17:57,445 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:17:57,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:57 BoogieIcfgContainer [2024-11-09 12:17:57,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:17:57,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:17:57,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:17:57,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:17:57,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:17:55" (1/3) ... [2024-11-09 12:17:57,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2090718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:57, skipping insertion in model container [2024-11-09 12:17:57,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:55" (2/3) ... [2024-11-09 12:17:57,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2090718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:17:57, skipping insertion in model container [2024-11-09 12:17:57,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:17:57" (3/3) ... [2024-11-09 12:17:57,456 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5-ll.c [2024-11-09 12:17:57,472 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:17:57,472 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-11-09 12:17:57,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:17:57,556 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;@3a4c3d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:17:57,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-09 12:17:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 103 states have (on average 1.854368932038835) internal successors, (191), 188 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 12:17:57,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:17:57,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:57,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:57,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:17:57,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 125491965, now seen corresponding path program 1 times [2024-11-09 12:17:57,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:57,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282184407] [2024-11-09 12:17:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:57,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:57,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282184407] [2024-11-09 12:17:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282184407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:57,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 12:17:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30965641] [2024-11-09 12:17:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:57,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 12:17:57,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 12:17:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 12:17:57,806 INFO L87 Difference]: Start difference. First operand has 195 states, 103 states have (on average 1.854368932038835) internal successors, (191), 188 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 12:17:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:57,842 INFO L93 Difference]: Finished difference Result 386 states and 402 transitions. [2024-11-09 12:17:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 12:17:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 12:17:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:57,853 INFO L225 Difference]: With dead ends: 386 [2024-11-09 12:17:57,853 INFO L226 Difference]: Without dead ends: 188 [2024-11-09 12:17:57,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 12:17:57,860 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:57,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:17:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-09 12:17:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-09 12:17:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 98 states have (on average 1.8571428571428572) internal successors, (182), 182 states have internal predecessors, (182), 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 12:17:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2024-11-09 12:17:57,915 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 8 [2024-11-09 12:17:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:57,916 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2024-11-09 12:17:57,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 12:17:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2024-11-09 12:17:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:17:57,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:57,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:57,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:17:57,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:17:57,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 182750267, now seen corresponding path program 1 times [2024-11-09 12:17:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245299530] [2024-11-09 12:17:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245299530] [2024-11-09 12:17:58,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245299530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:58,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:58,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:58,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503621525] [2024-11-09 12:17:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:58,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:58,316 INFO L87 Difference]: Start difference. First operand 188 states and 190 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 12:17:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:59,153 INFO L93 Difference]: Finished difference Result 346 states and 351 transitions. [2024-11-09 12:17:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:59,154 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 12:17:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:59,160 INFO L225 Difference]: With dead ends: 346 [2024-11-09 12:17:59,160 INFO L226 Difference]: Without dead ends: 336 [2024-11-09 12:17:59,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:59,162 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 264 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:59,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 704 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 12:17:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-09 12:17:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 229. [2024-11-09 12:17:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7956204379562044) internal successors, (246), 221 states have internal predecessors, (246), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 257 transitions. [2024-11-09 12:17:59,192 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 257 transitions. Word has length 8 [2024-11-09 12:17:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:59,192 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 257 transitions. [2024-11-09 12:17:59,193 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 12:17:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 257 transitions. [2024-11-09 12:17:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 12:17:59,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:59,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:59,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:17:59,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_35_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:17:59,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 837445765, now seen corresponding path program 1 times [2024-11-09 12:17:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566805419] [2024-11-09 12:17:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:59,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:59,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566805419] [2024-11-09 12:17:59,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566805419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:59,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:59,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:17:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332837694] [2024-11-09 12:17:59,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:59,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:17:59,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:17:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:17:59,445 INFO L87 Difference]: Start difference. First operand 229 states and 257 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:59,883 INFO L93 Difference]: Finished difference Result 336 states and 341 transitions. [2024-11-09 12:17:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:17:59,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 18 [2024-11-09 12:17:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:59,886 INFO L225 Difference]: With dead ends: 336 [2024-11-09 12:17:59,887 INFO L226 Difference]: Without dead ends: 328 [2024-11-09 12:17:59,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:17:59,891 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 220 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:59,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 703 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-09 12:17:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 229. [2024-11-09 12:17:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7372262773722629) internal successors, (238), 221 states have internal predecessors, (238), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:17:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2024-11-09 12:17:59,913 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 18 [2024-11-09 12:17:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:59,913 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2024-11-09 12:17:59,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:17:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2024-11-09 12:17:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:17:59,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:59,914 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 12:17:59,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:17:59,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_35_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:17:59,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:59,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2121651597, now seen corresponding path program 1 times [2024-11-09 12:17:59,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:59,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750750622] [2024-11-09 12:17:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326859717] [2024-11-09 12:17:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:59,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:59,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:59,963 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 12:17:59,964 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 12:18:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 12:18:00,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:00,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:00,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750750622] [2024-11-09 12:18:00,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:00,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326859717] [2024-11-09 12:18:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326859717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306750783] [2024-11-09 12:18:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:00,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:00,287 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:00,864 INFO L93 Difference]: Finished difference Result 328 states and 333 transitions. [2024-11-09 12:18:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 12:18:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:00,866 INFO L225 Difference]: With dead ends: 328 [2024-11-09 12:18:00,866 INFO L226 Difference]: Without dead ends: 326 [2024-11-09 12:18:00,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:00,868 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 202 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:00,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 850 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-09 12:18:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 229. [2024-11-09 12:18:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7226277372262773) internal successors, (236), 221 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2024-11-09 12:18:00,879 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 26 [2024-11-09 12:18:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:00,879 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2024-11-09 12:18:00,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2024-11-09 12:18:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 12:18:00,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:00,881 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 12:18:00,900 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 12:18:01,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,082 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_35_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:01,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1202275121, now seen corresponding path program 1 times [2024-11-09 12:18:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:01,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373650032] [2024-11-09 12:18:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373650032] [2024-11-09 12:18:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373650032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:01,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:01,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687033898] [2024-11-09 12:18:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:01,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:01,278 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:01,721 INFO L93 Difference]: Finished difference Result 326 states and 331 transitions. [2024-11-09 12:18:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 28 [2024-11-09 12:18:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:01,726 INFO L225 Difference]: With dead ends: 326 [2024-11-09 12:18:01,726 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 12:18:01,727 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 12:18:01,728 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 178 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:01,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 715 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 12:18:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 229. [2024-11-09 12:18:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 221 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 241 transitions. [2024-11-09 12:18:01,743 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 241 transitions. Word has length 28 [2024-11-09 12:18:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:01,745 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 241 transitions. [2024-11-09 12:18:01,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 241 transitions. [2024-11-09 12:18:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 12:18:01,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:01,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:01,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 12:18:01,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_35_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:01,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1105935723, now seen corresponding path program 1 times [2024-11-09 12:18:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385891925] [2024-11-09 12:18:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929943884] [2024-11-09 12:18:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:01,789 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 12:18:01,790 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 12:18:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:01,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:01,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:02,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:02,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385891925] [2024-11-09 12:18:02,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929943884] [2024-11-09 12:18:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929943884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:02,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:02,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:02,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518481634] [2024-11-09 12:18:02,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:02,121 INFO L87 Difference]: Start difference. First operand 229 states and 241 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:02,722 INFO L93 Difference]: Finished difference Result 320 states and 325 transitions. [2024-11-09 12:18:02,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 34 [2024-11-09 12:18:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:02,724 INFO L225 Difference]: With dead ends: 320 [2024-11-09 12:18:02,724 INFO L226 Difference]: Without dead ends: 318 [2024-11-09 12:18:02,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:02,725 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 164 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:02,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 853 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-09 12:18:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 229. [2024-11-09 12:18:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6642335766423357) internal successors, (228), 221 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 239 transitions. [2024-11-09 12:18:02,733 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 239 transitions. Word has length 34 [2024-11-09 12:18:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:02,734 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 239 transitions. [2024-11-09 12:18:02,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 239 transitions. [2024-11-09 12:18:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:18:02,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:02,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:02,752 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 12:18:02,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 12:18:02,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_35_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:02,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301417, now seen corresponding path program 1 times [2024-11-09 12:18:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687912504] [2024-11-09 12:18:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687912504] [2024-11-09 12:18:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687912504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:03,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549941313] [2024-11-09 12:18:03,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:03,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:03,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:03,120 INFO L87 Difference]: Start difference. First operand 229 states and 239 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:03,220 INFO L93 Difference]: Finished difference Result 316 states and 320 transitions. [2024-11-09 12:18:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:03,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 36 [2024-11-09 12:18:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:03,223 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:03,223 INFO L226 Difference]: Without dead ends: 314 [2024-11-09 12:18:03,223 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 12:18:03,224 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 167 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:03,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 875 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-09 12:18:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 229. [2024-11-09 12:18:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6496350364963503) internal successors, (226), 221 states have internal predecessors, (226), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 237 transitions. [2024-11-09 12:18:03,231 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 237 transitions. Word has length 36 [2024-11-09 12:18:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:03,232 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 237 transitions. [2024-11-09 12:18:03,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 237 transitions. [2024-11-09 12:18:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:18:03,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:03,233 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:03,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 12:18:03,233 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_35_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:03,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1249085721, now seen corresponding path program 1 times [2024-11-09 12:18:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545541606] [2024-11-09 12:18:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545541606] [2024-11-09 12:18:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545541606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:03,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963625704] [2024-11-09 12:18:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:03,498 INFO L87 Difference]: Start difference. First operand 229 states and 237 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:05,287 INFO L93 Difference]: Finished difference Result 314 states and 318 transitions. [2024-11-09 12:18:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-09 12:18:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:05,291 INFO L225 Difference]: With dead ends: 314 [2024-11-09 12:18:05,294 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 12:18:05,294 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 12:18:05,295 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 163 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:05,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 937 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 12:18:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 12:18:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 229. [2024-11-09 12:18:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 221 states have internal predecessors, (225), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 236 transitions. [2024-11-09 12:18:05,306 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 236 transitions. Word has length 38 [2024-11-09 12:18:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:05,307 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 236 transitions. [2024-11-09 12:18:05,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 236 transitions. [2024-11-09 12:18:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:18:05,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:05,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:05,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 12:18:05,309 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_35_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:05,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:05,309 INFO L85 PathProgramCache]: Analyzing trace with hash 66951891, now seen corresponding path program 1 times [2024-11-09 12:18:05,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:05,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666101775] [2024-11-09 12:18:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:05,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666101775] [2024-11-09 12:18:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666101775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171651936] [2024-11-09 12:18:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:05,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:05,567 INFO L87 Difference]: Start difference. First operand 229 states and 236 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:06,764 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2024-11-09 12:18:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 12:18:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:06,766 INFO L225 Difference]: With dead ends: 313 [2024-11-09 12:18:06,767 INFO L226 Difference]: Without dead ends: 312 [2024-11-09 12:18:06,767 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 12:18:06,768 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 160 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:06,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 823 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 12:18:06,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-09 12:18:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 229. [2024-11-09 12:18:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.635036496350365) internal successors, (224), 221 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 235 transitions. [2024-11-09 12:18:06,776 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 235 transitions. Word has length 39 [2024-11-09 12:18:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:06,776 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 235 transitions. [2024-11-09 12:18:06,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 235 transitions. [2024-11-09 12:18:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:18:06,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:06,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:06,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 12:18:06,778 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_35_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:06,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:06,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2075508827, now seen corresponding path program 1 times [2024-11-09 12:18:06,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:06,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382436657] [2024-11-09 12:18:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:06,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382436657] [2024-11-09 12:18:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382436657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:07,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236286281] [2024-11-09 12:18:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:07,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:07,008 INFO L87 Difference]: Start difference. First operand 229 states and 235 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:08,044 INFO L93 Difference]: Finished difference Result 314 states and 319 transitions. [2024-11-09 12:18:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:08,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-09 12:18:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:08,046 INFO L225 Difference]: With dead ends: 314 [2024-11-09 12:18:08,046 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 12:18:08,047 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 12:18:08,047 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 141 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:08,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 713 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 12:18:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 12:18:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 229. [2024-11-09 12:18:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6277372262773722) internal successors, (223), 221 states have internal predecessors, (223), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 234 transitions. [2024-11-09 12:18:08,060 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 234 transitions. Word has length 40 [2024-11-09 12:18:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:08,060 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 234 transitions. [2024-11-09 12:18:08,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 234 transitions. [2024-11-09 12:18:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 12:18:08,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:08,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:08,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 12:18:08,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_35_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:08,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -83735595, now seen corresponding path program 1 times [2024-11-09 12:18:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698738923] [2024-11-09 12:18:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:08,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698738923] [2024-11-09 12:18:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698738923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:08,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485335573] [2024-11-09 12:18:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:08,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:08,282 INFO L87 Difference]: Start difference. First operand 229 states and 234 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,051 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2024-11-09 12:18:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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 41 [2024-11-09 12:18:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,053 INFO L225 Difference]: With dead ends: 313 [2024-11-09 12:18:09,053 INFO L226 Difference]: Without dead ends: 312 [2024-11-09 12:18:09,054 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 12:18:09,055 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 135 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 706 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 12:18:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-09 12:18:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 229. [2024-11-09 12:18:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 221 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-09 12:18:09,064 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 41 [2024-11-09 12:18:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,064 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-09 12:18:09,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-09 12:18:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 12:18:09,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:09,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 12:18:09,067 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_35_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:09,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1969459027, now seen corresponding path program 1 times [2024-11-09 12:18:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742271843] [2024-11-09 12:18:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-09 12:18:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:09,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742271843] [2024-11-09 12:18:09,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742271843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576398954] [2024-11-09 12:18:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:09,292 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,377 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-11-09 12:18:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-09 12:18:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,379 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:18:09,379 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:18:09,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:09,380 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 125 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 934 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:18:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 230. [2024-11-09 12:18:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 138 states have (on average 1.6159420289855073) internal successors, (223), 222 states have internal predecessors, (223), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2024-11-09 12:18:09,387 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 49 [2024-11-09 12:18:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,387 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 234 transitions. [2024-11-09 12:18:09,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 234 transitions. [2024-11-09 12:18:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:18:09,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:09,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:18:09,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_27_to_35_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:09,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 923687911, now seen corresponding path program 1 times [2024-11-09 12:18:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294303360] [2024-11-09 12:18:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-09 12:18:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294303360] [2024-11-09 12:18:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294303360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061971662] [2024-11-09 12:18:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:09,672 INFO L87 Difference]: Start difference. First operand 230 states and 234 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,760 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-09 12:18:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2024-11-09 12:18:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,763 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:18:09,764 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 12:18:09,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:09,765 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 227 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 799 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 12:18:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-09 12:18:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 138 states have (on average 1.608695652173913) internal successors, (222), 221 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-09 12:18:09,775 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 50 [2024-11-09 12:18:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,775 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-09 12:18:09,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-09 12:18:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:18:09,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,776 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:09,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 12:18:09,777 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_27_to_35_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:09,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1430445611, now seen corresponding path program 1 times [2024-11-09 12:18:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853727606] [2024-11-09 12:18:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-09 12:18:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853727606] [2024-11-09 12:18:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853727606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012304353] [2024-11-09 12:18:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:09,988 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:10,164 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2024-11-09 12:18:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:10,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 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 51 [2024-11-09 12:18:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:10,166 INFO L225 Difference]: With dead ends: 309 [2024-11-09 12:18:10,168 INFO L226 Difference]: Without dead ends: 307 [2024-11-09 12:18:10,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:10,169 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 121 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:10,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 757 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-09 12:18:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 232. [2024-11-09 12:18:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 141 states have (on average 1.5957446808510638) internal successors, (225), 224 states have internal predecessors, (225), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 236 transitions. [2024-11-09 12:18:10,186 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 236 transitions. Word has length 51 [2024-11-09 12:18:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:10,187 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 236 transitions. [2024-11-09 12:18:10,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 236 transitions. [2024-11-09 12:18:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:18:10,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:10,188 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:10,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 12:18:10,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:10,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1394239704, now seen corresponding path program 1 times [2024-11-09 12:18:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114304153] [2024-11-09 12:18:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:10,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-09 12:18:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:10,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:18:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114304153] [2024-11-09 12:18:10,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114304153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:10,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:10,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174920617] [2024-11-09 12:18:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:10,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:10,420 INFO L87 Difference]: Start difference. First operand 232 states and 236 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 12:18:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:11,212 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2024-11-09 12:18:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 52 [2024-11-09 12:18:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:11,214 INFO L225 Difference]: With dead ends: 309 [2024-11-09 12:18:11,214 INFO L226 Difference]: Without dead ends: 299 [2024-11-09 12:18:11,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:11,215 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 196 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:11,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 521 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 12:18:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-09 12:18:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 245. [2024-11-09 12:18:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.5490196078431373) internal successors, (237), 235 states have internal predecessors, (237), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2024-11-09 12:18:11,224 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 52 [2024-11-09 12:18:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:11,224 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2024-11-09 12:18:11,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 12:18:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2024-11-09 12:18:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 12:18:11,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:11,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:11,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 12:18:11,226 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_27_to_35_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:11,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -268690345, now seen corresponding path program 1 times [2024-11-09 12:18:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533869054] [2024-11-09 12:18:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974341070] [2024-11-09 12:18:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:11,255 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 12:18:11,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:18:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:11,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:11,375 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 12:18:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:11,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533869054] [2024-11-09 12:18:11,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974341070] [2024-11-09 12:18:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974341070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:11,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213564870] [2024-11-09 12:18:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:11,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:11,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:11,565 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:11,935 INFO L93 Difference]: Finished difference Result 316 states and 326 transitions. [2024-11-09 12:18:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-11-09 12:18:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:11,937 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:11,937 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:11,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:11,938 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 183 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:11,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 670 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 275. [2024-11-09 12:18:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 181 states have (on average 1.5966850828729282) internal successors, (289), 264 states have internal predecessors, (289), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-11-09 12:18:11,950 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 53 [2024-11-09 12:18:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:11,951 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-11-09 12:18:11,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-11-09 12:18:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 12:18:11,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:11,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:11,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 12:18:12,152 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 12:18:12,153 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_27_to_35_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:12,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash 260534123, now seen corresponding path program 1 times [2024-11-09 12:18:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572395885] [2024-11-09 12:18:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:12,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83637675] [2024-11-09 12:18:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:12,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:12,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:18:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:12,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:12,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:12,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:12,466 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 12:18:12,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:12,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572395885] [2024-11-09 12:18:12,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:12,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83637675] [2024-11-09 12:18:12,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83637675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:12,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:12,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194095376] [2024-11-09 12:18:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:12,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:12,469 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:12,848 INFO L93 Difference]: Finished difference Result 316 states and 325 transitions. [2024-11-09 12:18:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-09 12:18:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:12,850 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:12,850 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:12,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:12,851 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 120 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:12,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 694 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 276. [2024-11-09 12:18:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 182 states have (on average 1.5934065934065933) internal successors, (290), 265 states have internal predecessors, (290), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2024-11-09 12:18:12,862 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 54 [2024-11-09 12:18:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:12,862 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2024-11-09 12:18:12,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2024-11-09 12:18:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 12:18:12,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:12,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:12,884 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 12:18:13,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 12:18:13,063 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_27_to_35_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:13,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -513376551, now seen corresponding path program 1 times [2024-11-09 12:18:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470125081] [2024-11-09 12:18:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023770326] [2024-11-09 12:18:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:13,091 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 12:18:13,093 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 12:18:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:13,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 12:18:13,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:13,222 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 12:18:13,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-09 12:18:13,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 12:18:13,414 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 12:18:13,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470125081] [2024-11-09 12:18:13,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023770326] [2024-11-09 12:18:13,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023770326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:13,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:13,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487499871] [2024-11-09 12:18:13,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:13,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:13,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:13,417 INFO L87 Difference]: Start difference. First operand 276 states and 304 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:13,736 INFO L93 Difference]: Finished difference Result 316 states and 324 transitions. [2024-11-09 12:18:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:13,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-09 12:18:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:13,738 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:13,738 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:13,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:13,739 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 189 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:13,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 835 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 277. [2024-11-09 12:18:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 183 states have (on average 1.5901639344262295) internal successors, (291), 266 states have internal predecessors, (291), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 305 transitions. [2024-11-09 12:18:13,749 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 305 transitions. Word has length 55 [2024-11-09 12:18:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:13,750 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 305 transitions. [2024-11-09 12:18:13,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 305 transitions. [2024-11-09 12:18:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 12:18:13,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:13,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:13,769 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 12:18:13,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 12:18:13,952 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_27_to_35_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:13,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1265196333, now seen corresponding path program 1 times [2024-11-09 12:18:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:13,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671810194] [2024-11-09 12:18:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540854369] [2024-11-09 12:18:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:13,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:13,988 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 12:18:13,989 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 12:18:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:14,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 12:18:14,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:14,106 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 12:18:14,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:14,293 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 12:18:14,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671810194] [2024-11-09 12:18:14,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540854369] [2024-11-09 12:18:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540854369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982486678] [2024-11-09 12:18:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:14,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:14,296 INFO L87 Difference]: Start difference. First operand 277 states and 305 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:14,735 INFO L93 Difference]: Finished difference Result 316 states and 323 transitions. [2024-11-09 12:18:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:14,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-09 12:18:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:14,737 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:14,737 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:14,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:14,738 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 122 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:14,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1112 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2024-11-09 12:18:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 184 states have (on average 1.5869565217391304) internal successors, (292), 267 states have internal predecessors, (292), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2024-11-09 12:18:14,749 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 56 [2024-11-09 12:18:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:14,750 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2024-11-09 12:18:14,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2024-11-09 12:18:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 12:18:14,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:14,750 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:14,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 12:18:14,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:14,951 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_27_to_35_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:14,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 566380891, now seen corresponding path program 1 times [2024-11-09 12:18:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540143858] [2024-11-09 12:18:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:14,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525095734] [2024-11-09 12:18:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:14,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:14,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:14,977 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 12:18:14,978 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 12:18:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:15,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 12:18:15,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:15,092 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 12:18:15,206 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 12:18:15,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-09 12:18:15,268 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 12:18:15,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540143858] [2024-11-09 12:18:15,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525095734] [2024-11-09 12:18:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525095734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:15,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:15,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:18:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764895139] [2024-11-09 12:18:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:15,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:18:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:18:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:15,270 INFO L87 Difference]: Start difference. First operand 278 states and 306 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:15,783 INFO L93 Difference]: Finished difference Result 316 states and 322 transitions. [2024-11-09 12:18:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:18:15,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-09 12:18:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:15,785 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:15,786 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:15,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:15,786 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 123 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:15,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1008 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 279. [2024-11-09 12:18:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 185 states have (on average 1.5837837837837838) internal successors, (293), 268 states have internal predecessors, (293), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2024-11-09 12:18:15,796 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 57 [2024-11-09 12:18:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:15,797 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2024-11-09 12:18:15,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2024-11-09 12:18:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 12:18:15,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:15,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:15,817 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 12:18:15,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:15,999 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_27_to_35_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:15,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 377938671, now seen corresponding path program 1 times [2024-11-09 12:18:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548695640] [2024-11-09 12:18:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847204374] [2024-11-09 12:18:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:16,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:16,025 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 12:18:16,027 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 12:18:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:16,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 12:18:16,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:16,151 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 12:18:16,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:16,335 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 12:18:16,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548695640] [2024-11-09 12:18:16,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847204374] [2024-11-09 12:18:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847204374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:16,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:18:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887324672] [2024-11-09 12:18:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:16,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:18:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:18:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:16,339 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:16,949 INFO L93 Difference]: Finished difference Result 316 states and 321 transitions. [2024-11-09 12:18:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:18:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 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 58 [2024-11-09 12:18:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:16,951 INFO L225 Difference]: With dead ends: 316 [2024-11-09 12:18:16,951 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 12:18:16,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:16,952 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 188 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:16,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 788 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:18:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 12:18:16,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2024-11-09 12:18:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 186 states have (on average 1.5806451612903225) internal successors, (294), 269 states have internal predecessors, (294), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 308 transitions. [2024-11-09 12:18:16,962 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 308 transitions. Word has length 58 [2024-11-09 12:18:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:16,963 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 308 transitions. [2024-11-09 12:18:16,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 308 transitions. [2024-11-09 12:18:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 12:18:16,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:16,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:16,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 12:18:17,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 12:18:17,168 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_27_to_35_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-09 12:18:17,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1168802851, now seen corresponding path program 1 times [2024-11-09 12:18:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461110881] [2024-11-09 12:18:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:17,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat