./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.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.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 6f3643eb7577eb0ba12bcd7a7f20ec9e29deb69664963fe3575fff225cd03ad0 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:17:56,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:17:56,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:17:56,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:17:56,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:17:56,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:17:56,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:17:56,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:17:56,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:17:56,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:17:56,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:17:56,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:17:56,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:17:56,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:17:56,956 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:17:56,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:17:56,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:17:56,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:17:56,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:17:56,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:17:56,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:17:56,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:17:56,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:17:56,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:17:56,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:17:56,959 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:17:56,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:17:56,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:17:56,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:17:56,964 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:17:56,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:17:56,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:17:56,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:17:56,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:17:56,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:56,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:17:56,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:17:56,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:17:56,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:17:56,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:17:56,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:17:56,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:17:56,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:17:56,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:17:56,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3643eb7577eb0ba12bcd7a7f20ec9e29deb69664963fe3575fff225cd03ad0 [2024-11-09 12:17:57,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:17:57,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:17:57,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:17:57,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:17:57,225 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:17:57,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-09 12:17:58,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:17:58,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:17:58,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-09 12:17:58,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94452aa5e/70a2f917c5284039b8d600fb9308d6c4/FLAGee689da43 [2024-11-09 12:17:58,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94452aa5e/70a2f917c5284039b8d600fb9308d6c4 [2024-11-09 12:17:58,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:17:58,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:17:58,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:58,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:17:58,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:17:58,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:58,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c17b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58, skipping insertion in model container [2024-11-09 12:17:58,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:58,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:17:58,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:58,943 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:17:58,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:17:58,984 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:17:58,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58 WrapperNode [2024-11-09 12:17:58,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:17:58,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:58,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:17:58,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:17:58,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,030 INFO L138 Inliner]: procedures = 16, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2024-11-09 12:17:59,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:17:59,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:17:59,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:17:59,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:17:59,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,067 INFO L175 MemorySlicer]: Split 56 memory accesses to 6 slices as follows [2, 6, 4, 3, 36, 5]. 64 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 1, 2, 2]. [2024-11-09 12:17:59,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:17:59,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:17:59,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:17:59,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:17:59,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (1/1) ... [2024-11-09 12:17:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:17:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:59,156 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 12:17:59,190 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 12:17:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:17:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-09 12:17:59,228 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-09 12:17:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:17:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:17:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:17:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:17:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:17:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 12:17:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:17:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:17:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:17:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:17:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:17:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:17:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:17:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:17:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 12:17:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:17:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:17:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:17:59,337 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:17:59,339 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:18:00,296 INFO L? ?]: Removed 367 outVars from TransFormulas that were not future-live. [2024-11-09 12:18:00,297 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:18:00,317 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:18:00,317 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:18:00,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:18:00 BoogieIcfgContainer [2024-11-09 12:18:00,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:18:00,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:18:00,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:18:00,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:18:00,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:17:58" (1/3) ... [2024-11-09 12:18:00,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c493e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:18:00, skipping insertion in model container [2024-11-09 12:18:00,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:17:58" (2/3) ... [2024-11-09 12:18:00,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c493e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:18:00, skipping insertion in model container [2024-11-09 12:18:00,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:18:00" (3/3) ... [2024-11-09 12:18:00,326 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5.c [2024-11-09 12:18:00,339 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:18:00,340 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-11-09 12:18:00,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:18:00,406 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;@269296f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:18:00,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-09 12:18:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 101 states have (on average 1.8613861386138615) internal successors, (188), 186 states have internal predecessors, (188), 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 12:18:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 12:18:00,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:00,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 12:18:00,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:00,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -237194671, now seen corresponding path program 1 times [2024-11-09 12:18:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:00,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446702358] [2024-11-09 12:18:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:00,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:00,916 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 12:18:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446702358] [2024-11-09 12:18:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446702358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040679296] [2024-11-09 12:18:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:00,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:00,945 INFO L87 Difference]: Start difference. First operand has 193 states, 101 states have (on average 1.8613861386138615) internal successors, (188), 186 states have internal predecessors, (188), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:01,427 INFO L93 Difference]: Finished difference Result 530 states and 560 transitions. [2024-11-09 12:18:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:01,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 12:18:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:01,440 INFO L225 Difference]: With dead ends: 530 [2024-11-09 12:18:01,441 INFO L226 Difference]: Without dead ends: 334 [2024-11-09 12:18:01,444 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 12:18:01,446 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 264 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:01,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 728 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-09 12:18:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 227. [2024-11-09 12:18:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.8074074074074074) internal successors, (244), 219 states have internal predecessors, (244), 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 12:18:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 255 transitions. [2024-11-09 12:18:01,497 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 255 transitions. Word has length 6 [2024-11-09 12:18:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:01,497 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 255 transitions. [2024-11-09 12:18:01,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 255 transitions. [2024-11-09 12:18:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 12:18:01,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:01,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:01,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:18:01,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:01,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash 700487739, now seen corresponding path program 1 times [2024-11-09 12:18:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:01,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591901532] [2024-11-09 12:18:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:01,653 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 12:18:01,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591901532] [2024-11-09 12:18:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591901532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:01,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:01,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765133012] [2024-11-09 12:18:01,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:01,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:01,657 INFO L87 Difference]: Start difference. First operand 227 states and 255 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:01,986 INFO L93 Difference]: Finished difference Result 334 states and 339 transitions. [2024-11-09 12:18:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:01,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 12:18:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:01,988 INFO L225 Difference]: With dead ends: 334 [2024-11-09 12:18:01,988 INFO L226 Difference]: Without dead ends: 326 [2024-11-09 12:18:01,989 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 12:18:01,990 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 220 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:01,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 694 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-09 12:18:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 227. [2024-11-09 12:18:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 219 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 12:18:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 247 transitions. [2024-11-09 12:18:02,001 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 247 transitions. Word has length 16 [2024-11-09 12:18:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:02,001 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 247 transitions. [2024-11-09 12:18:02,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 247 transitions. [2024-11-09 12:18:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 12:18:02,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:02,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:02,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:18:02,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:02,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -179385917, now seen corresponding path program 1 times [2024-11-09 12:18:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736341182] [2024-11-09 12:18:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126196913] [2024-11-09 12:18:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:02,053 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 12:18:02,060 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 12:18:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:02,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:02,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:02,210 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 12:18:02,335 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 12:18:02,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736341182] [2024-11-09 12:18:02,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126196913] [2024-11-09 12:18:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126196913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125960478] [2024-11-09 12:18:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:02,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:02,337 INFO L87 Difference]: Start difference. First operand 227 states and 247 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:02,671 INFO L93 Difference]: Finished difference Result 326 states and 331 transitions. [2024-11-09 12:18:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-09 12:18:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:02,673 INFO L225 Difference]: With dead ends: 326 [2024-11-09 12:18:02,673 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 12:18:02,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 12:18:02,674 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 202 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:02,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 839 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 12:18:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 227. [2024-11-09 12:18:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.7333333333333334) internal successors, (234), 219 states have internal predecessors, (234), 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 12:18:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2024-11-09 12:18:02,688 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 24 [2024-11-09 12:18:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:02,688 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2024-11-09 12:18:02,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 12:18:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2024-11-09 12:18:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:18:02,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:02,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:02,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:02,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:02,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:02,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -591172059, now seen corresponding path program 1 times [2024-11-09 12:18:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124239778] [2024-11-09 12:18:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,061 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 12:18:03,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124239778] [2024-11-09 12:18:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124239778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167041818] [2024-11-09 12:18:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:03,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:03,063 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 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 12:18:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:03,391 INFO L93 Difference]: Finished difference Result 324 states and 329 transitions. [2024-11-09 12:18:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:03,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 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 12:18:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:03,393 INFO L225 Difference]: With dead ends: 324 [2024-11-09 12:18:03,393 INFO L226 Difference]: Without dead ends: 318 [2024-11-09 12:18:03,394 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 12:18:03,395 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 178 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:03,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 706 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-09 12:18:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 227. [2024-11-09 12:18:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.6888888888888889) internal successors, (228), 219 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 12:18:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 239 transitions. [2024-11-09 12:18:03,404 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 239 transitions. Word has length 26 [2024-11-09 12:18:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:03,404 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 239 transitions. [2024-11-09 12:18:03,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 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 12:18:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 239 transitions. [2024-11-09 12:18:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 12:18:03,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:03,405 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] [2024-11-09 12:18:03,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 12:18:03,405 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:03,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash 421788491, now seen corresponding path program 1 times [2024-11-09 12:18:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:03,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820909433] [2024-11-09 12:18:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:03,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425470273] [2024-11-09 12:18:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:03,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:03,429 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 12:18:03,431 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 12:18:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:03,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 12:18:03,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:03,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:03,640 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 12:18:03,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820909433] [2024-11-09 12:18:03,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425470273] [2024-11-09 12:18:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425470273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:03,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:03,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080286941] [2024-11-09 12:18:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:03,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:03,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:03,643 INFO L87 Difference]: Start difference. First operand 227 states and 239 transitions. Second operand has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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 12:18:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:03,991 INFO L93 Difference]: Finished difference Result 318 states and 323 transitions. [2024-11-09 12:18:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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 32 [2024-11-09 12:18:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:03,993 INFO L225 Difference]: With dead ends: 318 [2024-11-09 12:18:03,993 INFO L226 Difference]: Without dead ends: 316 [2024-11-09 12:18:03,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 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 12:18:03,994 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 190 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:03,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 718 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-09 12:18:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 227. [2024-11-09 12:18:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.674074074074074) internal successors, (226), 219 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 12:18:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 237 transitions. [2024-11-09 12:18:04,001 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 237 transitions. Word has length 32 [2024-11-09 12:18:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,002 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 237 transitions. [2024-11-09 12:18:04,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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 12:18:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 237 transitions. [2024-11-09 12:18:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 12:18:04,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,002 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 12:18:04,016 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 12:18:04,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:04,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:04,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1611816877, now seen corresponding path program 1 times [2024-11-09 12:18:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236081480] [2024-11-09 12:18:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236081480] [2024-11-09 12:18:04,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236081480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929778724] [2024-11-09 12:18:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:04,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:04,317 INFO L87 Difference]: Start difference. First operand 227 states and 237 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 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 12:18:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:04,412 INFO L93 Difference]: Finished difference Result 314 states and 318 transitions. [2024-11-09 12:18:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:04,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 12:18:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:04,413 INFO L225 Difference]: With dead ends: 314 [2024-11-09 12:18:04,413 INFO L226 Difference]: Without dead ends: 312 [2024-11-09 12:18:04,418 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 12:18:04,418 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 167 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:04,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 866 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-09 12:18:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 227. [2024-11-09 12:18:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.6592592592592592) internal successors, (224), 219 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 12:18:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2024-11-09 12:18:04,429 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 34 [2024-11-09 12:18:04,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:04,429 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2024-11-09 12:18:04,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 12:18:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2024-11-09 12:18:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:18:04,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:04,430 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:04,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 12:18:04,430 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:04,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1527172081, now seen corresponding path program 1 times [2024-11-09 12:18:04,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:04,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250222545] [2024-11-09 12:18:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:04,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:04,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250222545] [2024-11-09 12:18:04,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250222545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:04,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:04,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:04,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995380712] [2024-11-09 12:18:04,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:04,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:04,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:04,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:04,605 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 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 12:18:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:06,025 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-11-09 12:18:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 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 12:18:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:06,026 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:18:06,026 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:18:06,027 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 12:18:06,027 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 170 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:06,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 837 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 12:18:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:18:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 227. [2024-11-09 12:18:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.651851851851852) internal successors, (223), 219 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 12:18:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 234 transitions. [2024-11-09 12:18:06,034 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 234 transitions. Word has length 36 [2024-11-09 12:18:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:06,034 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 234 transitions. [2024-11-09 12:18:06,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 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 12:18:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 234 transitions. [2024-11-09 12:18:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 12:18:06,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:06,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:06,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 12:18:06,035 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:06,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash -97694158, now seen corresponding path program 1 times [2024-11-09 12:18:06,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:06,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525279019] [2024-11-09 12:18:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:06,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:06,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:06,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525279019] [2024-11-09 12:18:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525279019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:06,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:06,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632675814] [2024-11-09 12:18:06,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:06,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:06,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:06,205 INFO L87 Difference]: Start difference. First operand 227 states and 234 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:06,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:06,822 INFO L93 Difference]: Finished difference Result 311 states and 315 transitions. [2024-11-09 12:18:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:06,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 12:18:06,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:06,824 INFO L225 Difference]: With dead ends: 311 [2024-11-09 12:18:06,824 INFO L226 Difference]: Without dead ends: 310 [2024-11-09 12:18:06,824 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 12:18:06,825 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 160 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:06,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 814 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:18:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-09 12:18:06,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 227. [2024-11-09 12:18:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.6444444444444444) internal successors, (222), 219 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 12:18:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 233 transitions. [2024-11-09 12:18:06,831 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 233 transitions. Word has length 37 [2024-11-09 12:18:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:06,832 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 233 transitions. [2024-11-09 12:18:06,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 233 transitions. [2024-11-09 12:18:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:18:06,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:06,832 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 12:18:06,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 12:18:06,833 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:06,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1266448497, now seen corresponding path program 1 times [2024-11-09 12:18:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465751137] [2024-11-09 12:18:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:06,999 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 12:18:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465751137] [2024-11-09 12:18:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465751137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:07,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:07,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908975714] [2024-11-09 12:18:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:07,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:07,004 INFO L87 Difference]: Start difference. First operand 227 states and 233 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 12:18:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:07,836 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2024-11-09 12:18:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:07,837 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 12:18:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:07,838 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:18:07,838 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:18:07,838 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 12:18:07,839 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 138 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:07,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 787 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 12:18:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:18:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 227. [2024-11-09 12:18:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.637037037037037) internal successors, (221), 219 states have internal predecessors, (221), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 232 transitions. [2024-11-09 12:18:07,845 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 232 transitions. Word has length 38 [2024-11-09 12:18:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 232 transitions. [2024-11-09 12:18:07,846 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 12:18:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 232 transitions. [2024-11-09 12:18:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:18:07,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:07,846 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 12:18:07,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 12:18:07,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:07,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash 605197844, now seen corresponding path program 1 times [2024-11-09 12:18:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920849298] [2024-11-09 12:18:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:07,991 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 12:18:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920849298] [2024-11-09 12:18:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920849298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778988903] [2024-11-09 12:18:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:07,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:07,995 INFO L87 Difference]: Start difference. First operand 227 states and 232 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 12:18:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:08,464 INFO L93 Difference]: Finished difference Result 311 states and 316 transitions. [2024-11-09 12:18:08,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:08,465 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 12:18:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:08,466 INFO L225 Difference]: With dead ends: 311 [2024-11-09 12:18:08,466 INFO L226 Difference]: Without dead ends: 310 [2024-11-09 12:18:08,466 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 12:18:08,466 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 135 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:08,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 697 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-09 12:18:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 227. [2024-11-09 12:18:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 135 states have (on average 1.6296296296296295) internal successors, (220), 219 states have internal predecessors, (220), 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 12:18:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2024-11-09 12:18:08,472 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 39 [2024-11-09 12:18:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:08,473 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2024-11-09 12:18:08,473 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 12:18:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2024-11-09 12:18:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 12:18:08,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:08,474 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] [2024-11-09 12:18:08,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 12:18:08,474 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -419476155, now seen corresponding path program 1 times [2024-11-09 12:18:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281989307] [2024-11-09 12:18:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,652 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 12:18:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281989307] [2024-11-09 12:18:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281989307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:08,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:08,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796873943] [2024-11-09 12:18:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:08,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:08,654 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:08,732 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2024-11-09 12:18:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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 47 [2024-11-09 12:18:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:08,734 INFO L225 Difference]: With dead ends: 310 [2024-11-09 12:18:08,734 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 12:18:08,734 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 12:18:08,735 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 125 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:08,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 925 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 12:18:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 228. [2024-11-09 12:18:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.625) internal successors, (221), 220 states have internal predecessors, (221), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-11-09 12:18:08,741 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 47 [2024-11-09 12:18:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:08,741 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-11-09 12:18:08,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-11-09 12:18:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 12:18:08,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:08,742 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:08,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 12:18:08,742 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:08,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -118858806, now seen corresponding path program 1 times [2024-11-09 12:18:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111004456] [2024-11-09 12:18:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:08,896 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 12:18:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111004456] [2024-11-09 12:18:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111004456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:08,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:08,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045379384] [2024-11-09 12:18:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:08,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:08,898 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:08,959 INFO L93 Difference]: Finished difference Result 309 states and 313 transitions. [2024-11-09 12:18:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-09 12:18:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:08,961 INFO L225 Difference]: With dead ends: 309 [2024-11-09 12:18:08,961 INFO L226 Difference]: Without dead ends: 308 [2024-11-09 12:18:08,961 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 12:18:08,962 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 122 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:08,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 927 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:18:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-09 12:18:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 229. [2024-11-09 12:18:08,967 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 12:18:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-09 12:18:08,967 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 48 [2024-11-09 12:18:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:08,968 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-09 12:18:08,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-09 12:18:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 12:18:08,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:08,969 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 12:18:08,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:18:08,969 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:08,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 610344423, now seen corresponding path program 1 times [2024-11-09 12:18:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895327244] [2024-11-09 12:18:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,104 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 12:18:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895327244] [2024-11-09 12:18:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895327244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992181460] [2024-11-09 12:18:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:09,106 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 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 12:18:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,224 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-11-09 12:18:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 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 12:18:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,226 INFO L225 Difference]: With dead ends: 308 [2024-11-09 12:18:09,226 INFO L226 Difference]: Without dead ends: 306 [2024-11-09 12:18:09,226 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 12:18:09,227 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 121 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 753 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-09 12:18:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 231. [2024-11-09 12:18:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 139 states have (on average 1.6115107913669064) internal successors, (224), 223 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:18:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2024-11-09 12:18:09,233 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 49 [2024-11-09 12:18:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,234 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2024-11-09 12:18:09,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 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 12:18:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2024-11-09 12:18:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:18:09,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,235 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 12:18:09,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 12:18:09,235 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:09,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1740815667, now seen corresponding path program 1 times [2024-11-09 12:18:09,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596243795] [2024-11-09 12:18:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:18:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,351 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 12:18:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596243795] [2024-11-09 12:18:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596243795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066543728] [2024-11-09 12:18:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:09,352 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:09,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:09,677 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-11-09 12:18:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 50 [2024-11-09 12:18:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:09,679 INFO L225 Difference]: With dead ends: 308 [2024-11-09 12:18:09,679 INFO L226 Difference]: Without dead ends: 298 [2024-11-09 12:18:09,679 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 12:18:09,680 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:09,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 458 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-09 12:18:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 244. [2024-11-09 12:18:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 234 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 12:18:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2024-11-09 12:18:09,686 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 50 [2024-11-09 12:18:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:09,686 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2024-11-09 12:18:09,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2024-11-09 12:18:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:18:09,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:09,687 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 12:18:09,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 12:18:09,687 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_25_to_33_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:09,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1869525367, now seen corresponding path program 1 times [2024-11-09 12:18:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127034415] [2024-11-09 12:18:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609425979] [2024-11-09 12:18:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:09,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:09,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:09,708 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 12:18:09,710 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 12:18:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:09,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:09,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:09,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:09,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-09 12:18:09,940 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 12:18:09,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127034415] [2024-11-09 12:18:09,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609425979] [2024-11-09 12:18:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609425979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:09,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:09,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810376729] [2024-11-09 12:18:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:09,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:09,943 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 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 12:18:10,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:10,139 INFO L93 Difference]: Finished difference Result 300 states and 306 transitions. [2024-11-09 12:18:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 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 12:18:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:10,141 INFO L225 Difference]: With dead ends: 300 [2024-11-09 12:18:10,142 INFO L226 Difference]: Without dead ends: 298 [2024-11-09 12:18:10,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:18:10,144 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 303 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:10,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 594 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:10,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-09 12:18:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 242. [2024-11-09 12:18:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.5496688741721854) internal successors, (234), 232 states have internal predecessors, (234), 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 12:18:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2024-11-09 12:18:10,153 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 51 [2024-11-09 12:18:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:10,153 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2024-11-09 12:18:10,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 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 12:18:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2024-11-09 12:18:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:18:10,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:10,154 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 12:18:10,168 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 12:18:10,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:10,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:10,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2120711410, now seen corresponding path program 1 times [2024-11-09 12:18:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:10,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048375007] [2024-11-09 12:18:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516584060] [2024-11-09 12:18:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:10,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:10,384 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 12:18:10,385 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 12:18:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:10,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:10,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:10,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:10,574 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 12:18:10,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048375007] [2024-11-09 12:18:10,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516584060] [2024-11-09 12:18:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516584060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369433403] [2024-11-09 12:18:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:10,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:10,577 INFO L87 Difference]: Start difference. First operand 242 states and 246 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:10,837 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2024-11-09 12:18:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:10,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-09 12:18:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:10,838 INFO L225 Difference]: With dead ends: 313 [2024-11-09 12:18:10,838 INFO L226 Difference]: Without dead ends: 312 [2024-11-09 12:18:10,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:10,839 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 184 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:10,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 688 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-09 12:18:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 273. [2024-11-09 12:18:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 262 states have internal predecessors, (287), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-11-09 12:18:10,846 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 52 [2024-11-09 12:18:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:10,846 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-11-09 12:18:10,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-11-09 12:18:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 12:18:10,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:10,847 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 12:18:10,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:11,051 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,SelfDestructingSolverStorable15 [2024-11-09 12:18:11,052 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:11,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1317544149, now seen corresponding path program 1 times [2024-11-09 12:18:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:11,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905212846] [2024-11-09 12:18:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:11,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987841819] [2024-11-09 12:18:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:11,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:11,080 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 12:18:11,081 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 12:18:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 12:18:11,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:11,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:11,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 12:18:11,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 12:18:11,315 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 12:18:11,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:11,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:11,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905212846] [2024-11-09 12:18:11,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987841819] [2024-11-09 12:18:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987841819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:11,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:11,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:11,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763455887] [2024-11-09 12:18:11,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:11,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:11,317 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 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 12:18:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:11,557 INFO L93 Difference]: Finished difference Result 304 states and 309 transitions. [2024-11-09 12:18:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:18:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 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 12:18:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:11,558 INFO L225 Difference]: With dead ends: 304 [2024-11-09 12:18:11,558 INFO L226 Difference]: Without dead ends: 303 [2024-11-09 12:18:11,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:11,559 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 357 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:11,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 720 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-09 12:18:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 272. [2024-11-09 12:18:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 180 states have (on average 1.5888888888888888) internal successors, (286), 261 states have internal predecessors, (286), 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 12:18:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2024-11-09 12:18:11,588 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 53 [2024-11-09 12:18:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:11,588 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2024-11-09 12:18:11,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 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 12:18:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2024-11-09 12:18:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 12:18:11,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:11,589 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 12:18:11,603 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 12:18:11,789 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,SelfDestructingSolverStorable16 [2024-11-09 12:18:11,790 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:11,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2105804464, now seen corresponding path program 1 times [2024-11-09 12:18:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593859467] [2024-11-09 12:18:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:11,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810492798] [2024-11-09 12:18:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:11,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:11,820 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 12:18:11,822 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 12:18:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:11,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 12:18:11,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:11,918 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 12:18:12,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:12,054 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 12:18:12,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593859467] [2024-11-09 12:18:12,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810492798] [2024-11-09 12:18:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810492798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:18:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21783641] [2024-11-09 12:18:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:12,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:18:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:18:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:12,056 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:12,384 INFO L93 Difference]: Finished difference Result 312 states and 319 transitions. [2024-11-09 12:18:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:18:12,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-09 12:18:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:12,386 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:18:12,386 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:18:12,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:18:12,387 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 122 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:12,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1086 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:18:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 274. [2024-11-09 12:18:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 182 states have (on average 1.5824175824175823) internal successors, (288), 263 states have internal predecessors, (288), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 12:18:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-11-09 12:18:12,394 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 54 [2024-11-09 12:18:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:12,394 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-11-09 12:18:12,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-11-09 12:18:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 12:18:12,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:12,394 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 12:18:12,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:12,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 12:18:12,599 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:12,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash 855429069, now seen corresponding path program 1 times [2024-11-09 12:18:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:12,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967205231] [2024-11-09 12:18:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:12,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338537094] [2024-11-09 12:18:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:12,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:12,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:12,618 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 12:18:12,619 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 12:18:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:12,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 12:18:12,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:12,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:12,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 12:18:12,881 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 12:18:12,894 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 12:18:12,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967205231] [2024-11-09 12:18:12,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338537094] [2024-11-09 12:18:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338537094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:18:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948811770] [2024-11-09 12:18:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:18:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:18:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:12,896 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 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 12:18:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:13,120 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2024-11-09 12:18:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:18:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 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 12:18:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:13,121 INFO L225 Difference]: With dead ends: 305 [2024-11-09 12:18:13,121 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 12:18:13,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:18:13,122 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 350 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:13,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 721 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 12:18:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 273. [2024-11-09 12:18:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 182 states have (on average 1.5769230769230769) internal successors, (287), 262 states have internal predecessors, (287), 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 12:18:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-11-09 12:18:13,129 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 55 [2024-11-09 12:18:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:13,130 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-11-09 12:18:13,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 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 12:18:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-11-09 12:18:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 12:18:13,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:13,130 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 12:18:13,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 12:18:13,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:13,332 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 748497490, now seen corresponding path program 1 times [2024-11-09 12:18:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602201100] [2024-11-09 12:18:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462512342] [2024-11-09 12:18:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:13,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:13,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:13,357 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 12:18:13,358 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 12:18:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:13,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 12:18:13,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:13,469 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 12:18:13,555 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 12:18:13,614 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 12:18:13,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:13,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602201100] [2024-11-09 12:18:13,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462512342] [2024-11-09 12:18:13,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462512342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:13,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:13,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:18:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523969123] [2024-11-09 12:18:13,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:13,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:18:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:18:13,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:13,616 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:13,972 INFO L93 Difference]: Finished difference Result 311 states and 316 transitions. [2024-11-09 12:18:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:18:13,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-09 12:18:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:13,974 INFO L225 Difference]: With dead ends: 311 [2024-11-09 12:18:13,974 INFO L226 Difference]: Without dead ends: 310 [2024-11-09 12:18:13,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:13,975 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 122 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:13,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1092 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-09 12:18:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 275. [2024-11-09 12:18:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 184 states have (on average 1.5706521739130435) 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 12:18:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-11-09 12:18:13,982 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 56 [2024-11-09 12:18:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:13,982 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-11-09 12:18:13,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-11-09 12:18:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 12:18:13,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:13,983 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 12:18:13,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:14,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:14,184 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-09 12:18:14,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1728585839, now seen corresponding path program 1 times [2024-11-09 12:18:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731322629] [2024-11-09 12:18:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat