./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.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-wip.dd.update-z3-fca748b-m [2024-11-20 19:09:23,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:09:23,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:09:23,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:09:23,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:09:23,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:09:23,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:09:23,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:09:23,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:09:23,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:09:23,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:09:23,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:09:23,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:09:23,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:09:23,222 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:09:23,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:09:23,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:09:23,224 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:09:23,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:09:23,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:09:23,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:09:23,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:09:23,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:09:23,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:09:23,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:09:23,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:09:23,229 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:09:23,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:09:23,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:09:23,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:09:23,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:09:23,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:09:23,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:09:23,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:09:23,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:23,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:09:23,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:09:23,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:09:23,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:09:23,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:09:23,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:09:23,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:09:23,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:09:23,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:09:23,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3643eb7577eb0ba12bcd7a7f20ec9e29deb69664963fe3575fff225cd03ad0 [2024-11-20 19:09:23,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:09:23,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:09:23,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:09:23,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:09:23,546 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:09:23,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-20 19:09:25,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:09:25,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:09:25,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-20 19:09:25,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf1fa444/30284255393d477a821ece6975853496/FLAG198b62dc2 [2024-11-20 19:09:25,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf1fa444/30284255393d477a821ece6975853496 [2024-11-20 19:09:25,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:09:25,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:09:25,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:25,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:09:25,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:09:25,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:25,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fd7027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25, skipping insertion in model container [2024-11-20 19:09:25,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:25,633 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:09:25,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:25,915 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:09:25,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:25,967 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:09:25,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25 WrapperNode [2024-11-20 19:09:25,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:25,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:25,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:09:25,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:09:25,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:25,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,019 INFO L138 Inliner]: procedures = 16, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2024-11-20 19:09:26,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:26,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:09:26,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:09:26,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:09:26,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,067 INFO L175 MemorySlicer]: Split 56 memory accesses to 6 slices as follows [2, 3, 6, 36, 5, 4]. 64 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 0, 6, 0, 0, 0]. The 7 writes are split as follows [0, 1, 0, 2, 2, 2]. [2024-11-20 19:09:26,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:09:26,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:09:26,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:09:26,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:09:26,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (1/1) ... [2024-11-20 19:09:26,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:26,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:26,129 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) [2024-11-20 19:09:26,133 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 [2024-11-20 19:09:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:09:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-20 19:09:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-20 19:09:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:09:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 19:09:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 19:09:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 19:09:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:09:26,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:09:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 19:09:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 19:09:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 19:09:26,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:09:26,315 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:09:26,963 INFO L? ?]: Removed 367 outVars from TransFormulas that were not future-live. [2024-11-20 19:09:26,963 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:09:26,984 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:09:26,984 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 19:09:26,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:26 BoogieIcfgContainer [2024-11-20 19:09:26,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:09:26,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:09:26,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:09:26,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:09:26,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:09:25" (1/3) ... [2024-11-20 19:09:26,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:26, skipping insertion in model container [2024-11-20 19:09:26,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:25" (2/3) ... [2024-11-20 19:09:26,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:26, skipping insertion in model container [2024-11-20 19:09:26,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:26" (3/3) ... [2024-11-20 19:09:26,996 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5.c [2024-11-20 19:09:27,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:09:27,015 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-11-20 19:09:27,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:09:27,087 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;@777d62e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:09:27,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-20 19:09:27,091 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) [2024-11-20 19:09:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 19:09:27,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,097 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)] === [2024-11-20 19:09:27,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash -237194671, now seen corresponding path program 1 times [2024-11-20 19:09:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853872193] [2024-11-20 19:09:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853872193] [2024-11-20 19:09:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853872193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309508705] [2024-11-20 19:09:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:27,648 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) [2024-11-20 19:09:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,048 INFO L93 Difference]: Finished difference Result 530 states and 560 transitions. [2024-11-20 19:09:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:28,053 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 [2024-11-20 19:09:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,065 INFO L225 Difference]: With dead ends: 530 [2024-11-20 19:09:28,066 INFO L226 Difference]: Without dead ends: 334 [2024-11-20 19:09:28,070 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 [2024-11-20 19:09:28,074 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 264 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 728 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-20 19:09:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 227. [2024-11-20 19:09:28,142 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) [2024-11-20 19:09:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 255 transitions. [2024-11-20 19:09:28,146 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 255 transitions. Word has length 6 [2024-11-20 19:09:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,152 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 255 transitions. [2024-11-20 19:09:28,152 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) [2024-11-20 19:09:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 255 transitions. [2024-11-20 19:09:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 19:09:28,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:09:28,154 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)] === [2024-11-20 19:09:28,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash 700487739, now seen corresponding path program 1 times [2024-11-20 19:09:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126669769] [2024-11-20 19:09:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:28,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:28,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126669769] [2024-11-20 19:09:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126669769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634712471] [2024-11-20 19:09:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:28,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:28,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:28,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:28,403 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) [2024-11-20 19:09:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,719 INFO L93 Difference]: Finished difference Result 334 states and 339 transitions. [2024-11-20 19:09:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:28,720 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 [2024-11-20 19:09:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,722 INFO L225 Difference]: With dead ends: 334 [2024-11-20 19:09:28,725 INFO L226 Difference]: Without dead ends: 326 [2024-11-20 19:09:28,726 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 [2024-11-20 19:09:28,727 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 220 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-11-20 19:09:28,728 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] [2024-11-20 19:09:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-20 19:09:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 227. [2024-11-20 19:09:28,746 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) [2024-11-20 19:09:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 247 transitions. [2024-11-20 19:09:28,748 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 247 transitions. Word has length 16 [2024-11-20 19:09:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,748 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 247 transitions. [2024-11-20 19:09:28,749 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) [2024-11-20 19:09:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 247 transitions. [2024-11-20 19:09:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:09:28,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,750 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 19:09:28,750 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)] === [2024-11-20 19:09:28,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -179385917, now seen corresponding path program 1 times [2024-11-20 19:09:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059943584] [2024-11-20 19:09:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214582939] [2024-11-20 19:09:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:28,802 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) [2024-11-20 19:09:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:09:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 19:09:28,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:28,953 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 [2024-11-20 19:09:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059943584] [2024-11-20 19:09:29,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:29,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214582939] [2024-11-20 19:09:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214582939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:29,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131049090] [2024-11-20 19:09:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:29,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:29,112 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) [2024-11-20 19:09:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:29,400 INFO L93 Difference]: Finished difference Result 326 states and 331 transitions. [2024-11-20 19:09:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:29,400 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 [2024-11-20 19:09:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:29,403 INFO L225 Difference]: With dead ends: 326 [2024-11-20 19:09:29,403 INFO L226 Difference]: Without dead ends: 324 [2024-11-20 19:09:29,403 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 [2024-11-20 19:09:29,405 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 202 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:29,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 839 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-20 19:09:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 227. [2024-11-20 19:09:29,427 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) [2024-11-20 19:09:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2024-11-20 19:09:29,430 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 24 [2024-11-20 19:09:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:29,432 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2024-11-20 19:09:29,432 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) [2024-11-20 19:09:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2024-11-20 19:09:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:09:29,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:29,433 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] [2024-11-20 19:09:29,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:09:29,634 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 [2024-11-20 19:09:29,634 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)] === [2024-11-20 19:09:29,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -591172059, now seen corresponding path program 1 times [2024-11-20 19:09:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179813375] [2024-11-20 19:09:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179813375] [2024-11-20 19:09:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179813375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:29,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682111233] [2024-11-20 19:09:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:29,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:29,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:29,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:29,848 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) [2024-11-20 19:09:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:30,065 INFO L93 Difference]: Finished difference Result 324 states and 329 transitions. [2024-11-20 19:09:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:30,065 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 [2024-11-20 19:09:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:30,067 INFO L225 Difference]: With dead ends: 324 [2024-11-20 19:09:30,067 INFO L226 Difference]: Without dead ends: 318 [2024-11-20 19:09:30,068 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 [2024-11-20 19:09:30,068 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 178 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:30,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 706 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-20 19:09:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 227. [2024-11-20 19:09:30,084 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) [2024-11-20 19:09:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 239 transitions. [2024-11-20 19:09:30,088 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 239 transitions. Word has length 26 [2024-11-20 19:09:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:30,089 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 239 transitions. [2024-11-20 19:09:30,089 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) [2024-11-20 19:09:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 239 transitions. [2024-11-20 19:09:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 19:09:30,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:30,090 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] [2024-11-20 19:09:30,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 19:09:30,090 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)] === [2024-11-20 19:09:30,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 421788491, now seen corresponding path program 1 times [2024-11-20 19:09:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552283920] [2024-11-20 19:09:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317920825] [2024-11-20 19:09:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:30,125 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) [2024-11-20 19:09:30,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:09:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:30,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 19:09:30,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:30,216 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 [2024-11-20 19:09:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:30,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552283920] [2024-11-20 19:09:30,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317920825] [2024-11-20 19:09:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317920825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020699561] [2024-11-20 19:09:30,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:30,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:30,422 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) [2024-11-20 19:09:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:30,681 INFO L93 Difference]: Finished difference Result 318 states and 323 transitions. [2024-11-20 19:09:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:30,682 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 [2024-11-20 19:09:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:30,683 INFO L225 Difference]: With dead ends: 318 [2024-11-20 19:09:30,684 INFO L226 Difference]: Without dead ends: 316 [2024-11-20 19:09:30,684 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 [2024-11-20 19:09:30,689 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 190 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:30,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 718 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-20 19:09:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 227. [2024-11-20 19:09:30,696 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) [2024-11-20 19:09:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 237 transitions. [2024-11-20 19:09:30,698 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 237 transitions. Word has length 32 [2024-11-20 19:09:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:30,698 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 237 transitions. [2024-11-20 19:09:30,698 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) [2024-11-20 19:09:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 237 transitions. [2024-11-20 19:09:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 19:09:30,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:30,699 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] [2024-11-20 19:09:30,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:30,899 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 [2024-11-20 19:09:30,900 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)] === [2024-11-20 19:09:30,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1611816877, now seen corresponding path program 1 times [2024-11-20 19:09:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:30,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116046889] [2024-11-20 19:09:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:30,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116046889] [2024-11-20 19:09:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116046889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:31,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733250597] [2024-11-20 19:09:31,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:31,096 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) [2024-11-20 19:09:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,191 INFO L93 Difference]: Finished difference Result 314 states and 318 transitions. [2024-11-20 19:09:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:31,191 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 [2024-11-20 19:09:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,193 INFO L225 Difference]: With dead ends: 314 [2024-11-20 19:09:31,193 INFO L226 Difference]: Without dead ends: 312 [2024-11-20 19:09:31,193 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 [2024-11-20 19:09:31,194 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 [2024-11-20 19:09:31,194 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] [2024-11-20 19:09:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-20 19:09:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 227. [2024-11-20 19:09:31,208 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) [2024-11-20 19:09:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2024-11-20 19:09:31,211 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 34 [2024-11-20 19:09:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,212 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2024-11-20 19:09:31,212 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) [2024-11-20 19:09:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2024-11-20 19:09:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 19:09:31,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,213 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] [2024-11-20 19:09:31,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 19:09:31,213 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)] === [2024-11-20 19:09:31,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1527172081, now seen corresponding path program 1 times [2024-11-20 19:09:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793458490] [2024-11-20 19:09:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793458490] [2024-11-20 19:09:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793458490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:31,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107435053] [2024-11-20 19:09:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:31,440 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) [2024-11-20 19:09:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,803 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-11-20 19:09:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:31,803 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 [2024-11-20 19:09:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,805 INFO L225 Difference]: With dead ends: 312 [2024-11-20 19:09:31,805 INFO L226 Difference]: Without dead ends: 311 [2024-11-20 19:09:31,805 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 [2024-11-20 19:09:31,806 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 170 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:31,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 837 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-20 19:09:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 227. [2024-11-20 19:09:31,813 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) [2024-11-20 19:09:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 234 transitions. [2024-11-20 19:09:31,814 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 234 transitions. Word has length 36 [2024-11-20 19:09:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,815 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 234 transitions. [2024-11-20 19:09:31,815 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) [2024-11-20 19:09:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 234 transitions. [2024-11-20 19:09:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 19:09:31,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,816 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] [2024-11-20 19:09:31,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 19:09:31,816 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)] === [2024-11-20 19:09:31,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,817 INFO L85 PathProgramCache]: Analyzing trace with hash -97694158, now seen corresponding path program 1 times [2024-11-20 19:09:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111411269] [2024-11-20 19:09:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111411269] [2024-11-20 19:09:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111411269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:31,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:31,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448719748] [2024-11-20 19:09:31,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:31,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:31,983 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) [2024-11-20 19:09:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:32,297 INFO L93 Difference]: Finished difference Result 311 states and 315 transitions. [2024-11-20 19:09:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:32,297 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 [2024-11-20 19:09:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:32,299 INFO L225 Difference]: With dead ends: 311 [2024-11-20 19:09:32,299 INFO L226 Difference]: Without dead ends: 310 [2024-11-20 19:09:32,299 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 [2024-11-20 19:09:32,300 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 160 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:32,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 814 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-20 19:09:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 227. [2024-11-20 19:09:32,306 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) [2024-11-20 19:09:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 233 transitions. [2024-11-20 19:09:32,308 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 233 transitions. Word has length 37 [2024-11-20 19:09:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:32,308 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 233 transitions. [2024-11-20 19:09:32,308 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) [2024-11-20 19:09:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 233 transitions. [2024-11-20 19:09:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 19:09:32,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:32,309 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] [2024-11-20 19:09:32,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 19:09:32,310 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)] === [2024-11-20 19:09:32,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1266448497, now seen corresponding path program 1 times [2024-11-20 19:09:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778300357] [2024-11-20 19:09:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:32,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:32,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778300357] [2024-11-20 19:09:32,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778300357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:32,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:32,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227101300] [2024-11-20 19:09:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:32,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:32,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:32,505 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) [2024-11-20 19:09:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:32,896 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2024-11-20 19:09:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:32,896 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 [2024-11-20 19:09:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:32,898 INFO L225 Difference]: With dead ends: 312 [2024-11-20 19:09:32,898 INFO L226 Difference]: Without dead ends: 311 [2024-11-20 19:09:32,898 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 [2024-11-20 19:09:32,899 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 138 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:32,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 787 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-20 19:09:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 227. [2024-11-20 19:09:32,905 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) [2024-11-20 19:09:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 232 transitions. [2024-11-20 19:09:32,906 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 232 transitions. Word has length 38 [2024-11-20 19:09:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:32,907 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 232 transitions. [2024-11-20 19:09:32,907 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) [2024-11-20 19:09:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 232 transitions. [2024-11-20 19:09:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 19:09:32,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:32,908 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] [2024-11-20 19:09:32,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 19:09:32,908 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)] === [2024-11-20 19:09:32,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash 605197844, now seen corresponding path program 1 times [2024-11-20 19:09:32,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032849926] [2024-11-20 19:09:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:33,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032849926] [2024-11-20 19:09:33,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032849926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:33,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:33,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633788382] [2024-11-20 19:09:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:33,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:33,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:33,071 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) [2024-11-20 19:09:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:33,361 INFO L93 Difference]: Finished difference Result 311 states and 316 transitions. [2024-11-20 19:09:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:33,362 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 [2024-11-20 19:09:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:33,363 INFO L225 Difference]: With dead ends: 311 [2024-11-20 19:09:33,363 INFO L226 Difference]: Without dead ends: 310 [2024-11-20 19:09:33,364 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 [2024-11-20 19:09:33,364 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 135 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:33,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 697 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-20 19:09:33,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 227. [2024-11-20 19:09:33,371 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) [2024-11-20 19:09:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2024-11-20 19:09:33,372 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 39 [2024-11-20 19:09:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:33,372 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2024-11-20 19:09:33,372 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) [2024-11-20 19:09:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2024-11-20 19:09:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 19:09:33,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:33,373 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] [2024-11-20 19:09:33,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 19:09:33,374 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)] === [2024-11-20 19:09:33,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -419476155, now seen corresponding path program 1 times [2024-11-20 19:09:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359349031] [2024-11-20 19:09:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:33,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 19:09:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359349031] [2024-11-20 19:09:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359349031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:33,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674029846] [2024-11-20 19:09:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:33,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:33,598 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) [2024-11-20 19:09:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:33,678 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2024-11-20 19:09:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:33,679 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 [2024-11-20 19:09:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:33,680 INFO L225 Difference]: With dead ends: 310 [2024-11-20 19:09:33,680 INFO L226 Difference]: Without dead ends: 309 [2024-11-20 19:09:33,680 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 [2024-11-20 19:09:33,681 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:33,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 925 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-20 19:09:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 228. [2024-11-20 19:09:33,688 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) [2024-11-20 19:09:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-11-20 19:09:33,690 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 47 [2024-11-20 19:09:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:33,690 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-11-20 19:09:33,690 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) [2024-11-20 19:09:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-11-20 19:09:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 19:09:33,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:33,693 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] [2024-11-20 19:09:33,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 19:09:33,693 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)] === [2024-11-20 19:09:33,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -118858806, now seen corresponding path program 1 times [2024-11-20 19:09:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:33,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382548712] [2024-11-20 19:09:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:33,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:33,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 19:09:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382548712] [2024-11-20 19:09:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382548712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64599188] [2024-11-20 19:09:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:33,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:33,868 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:33,954 INFO L93 Difference]: Finished difference Result 309 states and 313 transitions. [2024-11-20 19:09:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:33,955 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 [2024-11-20 19:09:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:33,957 INFO L225 Difference]: With dead ends: 309 [2024-11-20 19:09:33,957 INFO L226 Difference]: Without dead ends: 308 [2024-11-20 19:09:33,957 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 [2024-11-20 19:09:33,958 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:33,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 927 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-20 19:09:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 229. [2024-11-20 19:09:33,965 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) [2024-11-20 19:09:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-20 19:09:33,966 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 48 [2024-11-20 19:09:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:33,966 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-20 19:09:33,966 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) [2024-11-20 19:09:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-20 19:09:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 19:09:33,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:33,967 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] [2024-11-20 19:09:33,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 19:09:33,968 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)] === [2024-11-20 19:09:33,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 610344423, now seen corresponding path program 1 times [2024-11-20 19:09:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175645424] [2024-11-20 19:09:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 19:09:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175645424] [2024-11-20 19:09:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175645424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883972533] [2024-11-20 19:09:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:34,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:34,123 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) [2024-11-20 19:09:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:34,291 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-11-20 19:09:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:34,292 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 [2024-11-20 19:09:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:34,293 INFO L225 Difference]: With dead ends: 308 [2024-11-20 19:09:34,293 INFO L226 Difference]: Without dead ends: 306 [2024-11-20 19:09:34,294 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 [2024-11-20 19:09:34,294 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 [2024-11-20 19:09:34,295 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] [2024-11-20 19:09:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-20 19:09:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 231. [2024-11-20 19:09:34,301 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) [2024-11-20 19:09:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2024-11-20 19:09:34,303 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 49 [2024-11-20 19:09:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:34,303 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2024-11-20 19:09:34,303 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) [2024-11-20 19:09:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2024-11-20 19:09:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 19:09:34,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:34,304 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] [2024-11-20 19:09:34,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 19:09:34,304 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)] === [2024-11-20 19:09:34,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1740815667, now seen corresponding path program 1 times [2024-11-20 19:09:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728615224] [2024-11-20 19:09:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:09:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 19:09:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:34,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728615224] [2024-11-20 19:09:34,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728615224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:34,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387318801] [2024-11-20 19:09:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:34,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:34,506 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) [2024-11-20 19:09:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:34,725 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-11-20 19:09:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:34,725 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 [2024-11-20 19:09:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:34,728 INFO L225 Difference]: With dead ends: 308 [2024-11-20 19:09:34,728 INFO L226 Difference]: Without dead ends: 298 [2024-11-20 19:09:34,729 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 [2024-11-20 19:09:34,729 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:34,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 458 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-20 19:09:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 244. [2024-11-20 19:09:34,737 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) [2024-11-20 19:09:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2024-11-20 19:09:34,738 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 50 [2024-11-20 19:09:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:34,739 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2024-11-20 19:09:34,739 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) [2024-11-20 19:09:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2024-11-20 19:09:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 19:09:34,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:34,740 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] [2024-11-20 19:09:34,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 19:09:34,740 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)] === [2024-11-20 19:09:34,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1869525367, now seen corresponding path program 1 times [2024-11-20 19:09:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377459319] [2024-11-20 19:09:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815172303] [2024-11-20 19:09:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:34,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:34,769 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) [2024-11-20 19:09:34,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:09:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 19:09:34,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:34,880 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 [2024-11-20 19:09:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:35,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:35,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377459319] [2024-11-20 19:09:35,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815172303] [2024-11-20 19:09:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815172303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145182417] [2024-11-20 19:09:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:35,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:35,055 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) [2024-11-20 19:09:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:35,363 INFO L93 Difference]: Finished difference Result 315 states and 325 transitions. [2024-11-20 19:09:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:35,364 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 [2024-11-20 19:09:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:35,365 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:35,365 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:35,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:35,366 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 119 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:35,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 849 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 274. [2024-11-20 19:09:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 179 states have (on average 1.6089385474860336) 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) [2024-11-20 19:09:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-11-20 19:09:35,378 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 51 [2024-11-20 19:09:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:35,378 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-11-20 19:09:35,378 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) [2024-11-20 19:09:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-11-20 19:09:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 19:09:35,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:35,379 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] [2024-11-20 19:09:35,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 19:09:35,583 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 [2024-11-20 19:09:35,584 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)] === [2024-11-20 19:09:35,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2120711410, now seen corresponding path program 1 times [2024-11-20 19:09:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018611228] [2024-11-20 19:09:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:35,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90916868] [2024-11-20 19:09:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:35,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:35,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:35,613 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) [2024-11-20 19:09:35,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:09:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:35,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:09:35,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:35,724 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 [2024-11-20 19:09:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:35,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018611228] [2024-11-20 19:09:35,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90916868] [2024-11-20 19:09:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90916868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:35,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:35,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822128594] [2024-11-20 19:09:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:35,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:35,869 INFO L87 Difference]: Start difference. First operand 274 states and 302 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) [2024-11-20 19:09:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:36,095 INFO L93 Difference]: Finished difference Result 315 states and 324 transitions. [2024-11-20 19:09:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:36,096 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 [2024-11-20 19:09:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:36,097 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:36,097 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:36,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:36,098 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 184 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:36,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 588 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 275. [2024-11-20 19:09:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 180 states have (on average 1.6055555555555556) 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) [2024-11-20 19:09:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-11-20 19:09:36,108 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 52 [2024-11-20 19:09:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:36,108 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-11-20 19:09:36,108 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) [2024-11-20 19:09:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-11-20 19:09:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:09:36,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:36,109 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] [2024-11-20 19:09:36,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:09:36,309 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 [2024-11-20 19:09:36,310 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)] === [2024-11-20 19:09:36,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1317544149, now seen corresponding path program 1 times [2024-11-20 19:09:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958732528] [2024-11-20 19:09:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:36,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216476467] [2024-11-20 19:09:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:36,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:36,336 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) [2024-11-20 19:09:36,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:09:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:36,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 19:09:36,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:36,446 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 [2024-11-20 19:09:36,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-20 19:09:36,596 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 [2024-11-20 19:09:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:36,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958732528] [2024-11-20 19:09:36,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216476467] [2024-11-20 19:09:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216476467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:36,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097236816] [2024-11-20 19:09:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:36,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:36,621 INFO L87 Difference]: Start difference. First operand 275 states and 303 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) [2024-11-20 19:09:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:36,947 INFO L93 Difference]: Finished difference Result 315 states and 323 transitions. [2024-11-20 19:09:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:36,948 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 [2024-11-20 19:09:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:36,949 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:36,949 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:36,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:09:36,950 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 189 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:36,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 723 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 276. [2024-11-20 19:09:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 181 states have (on average 1.6022099447513811) internal successors, (290), 265 states have internal predecessors, (290), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2024-11-20 19:09:36,959 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 53 [2024-11-20 19:09:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:36,959 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2024-11-20 19:09:36,959 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) [2024-11-20 19:09:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2024-11-20 19:09:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 19:09:36,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:36,960 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] [2024-11-20 19:09:36,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:37,160 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 [2024-11-20 19:09:37,160 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)] === [2024-11-20 19:09:37,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2105804464, now seen corresponding path program 1 times [2024-11-20 19:09:37,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:37,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110389433] [2024-11-20 19:09:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049567106] [2024-11-20 19:09:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:37,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:37,202 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) [2024-11-20 19:09:37,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:09:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:37,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:09:37,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:37,312 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 [2024-11-20 19:09:37,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:37,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110389433] [2024-11-20 19:09:37,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049567106] [2024-11-20 19:09:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049567106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:37,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:37,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600652658] [2024-11-20 19:09:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:37,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:37,467 INFO L87 Difference]: Start difference. First operand 276 states and 304 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) [2024-11-20 19:09:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:37,723 INFO L93 Difference]: Finished difference Result 315 states and 322 transitions. [2024-11-20 19:09:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:37,723 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 [2024-11-20 19:09:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:37,725 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:37,725 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:37,725 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 [2024-11-20 19:09:37,726 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 186 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:37,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 808 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 277. [2024-11-20 19:09:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 182 states have (on average 1.598901098901099) internal successors, (291), 266 states have internal predecessors, (291), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 305 transitions. [2024-11-20 19:09:37,738 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 305 transitions. Word has length 54 [2024-11-20 19:09:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:37,739 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 305 transitions. [2024-11-20 19:09:37,739 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) [2024-11-20 19:09:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 305 transitions. [2024-11-20 19:09:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 19:09:37,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:37,739 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] [2024-11-20 19:09:37,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:37,943 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 [2024-11-20 19:09:37,944 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)] === [2024-11-20 19:09:37,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 855429069, now seen corresponding path program 1 times [2024-11-20 19:09:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117240191] [2024-11-20 19:09:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327132330] [2024-11-20 19:09:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:37,973 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) [2024-11-20 19:09:37,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:09:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:38,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 19:09:38,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:38,087 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 [2024-11-20 19:09:38,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-20 19:09:38,291 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 [2024-11-20 19:09:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:38,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:38,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117240191] [2024-11-20 19:09:38,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327132330] [2024-11-20 19:09:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327132330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 19:09:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065721872] [2024-11-20 19:09:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:38,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:09:38,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:09:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:38,317 INFO L87 Difference]: Start difference. First operand 277 states and 305 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) [2024-11-20 19:09:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:38,629 INFO L93 Difference]: Finished difference Result 315 states and 321 transitions. [2024-11-20 19:09:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:09:38,629 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 [2024-11-20 19:09:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:38,631 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:38,631 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:38,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:09:38,632 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 185 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:38,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 860 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:38,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2024-11-20 19:09:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 183 states have (on average 1.5956284153005464) internal successors, (292), 267 states have internal predecessors, (292), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2024-11-20 19:09:38,640 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 55 [2024-11-20 19:09:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:38,640 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2024-11-20 19:09:38,640 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) [2024-11-20 19:09:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2024-11-20 19:09:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-20 19:09:38,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:38,641 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] [2024-11-20 19:09:38,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 19:09:38,845 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 [2024-11-20 19:09:38,846 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)] === [2024-11-20 19:09:38,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash 748497490, now seen corresponding path program 1 times [2024-11-20 19:09:38,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:38,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651433726] [2024-11-20 19:09:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:38,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317461954] [2024-11-20 19:09:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:38,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:38,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:38,875 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) [2024-11-20 19:09:38,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:09:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:38,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 19:09:38,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:38,985 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 [2024-11-20 19:09:39,096 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 [2024-11-20 19:09:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:39,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651433726] [2024-11-20 19:09:39,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317461954] [2024-11-20 19:09:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317461954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:39,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:39,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 19:09:39,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215852521] [2024-11-20 19:09:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:39,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:09:39,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:39,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:09:39,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:39,174 INFO L87 Difference]: Start difference. First operand 278 states and 306 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) [2024-11-20 19:09:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:39,461 INFO L93 Difference]: Finished difference Result 315 states and 320 transitions. [2024-11-20 19:09:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:09:39,461 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 [2024-11-20 19:09:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:39,462 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:09:39,463 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:39,463 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 [2024-11-20 19:09:39,463 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 186 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:39,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 814 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 279. [2024-11-20 19:09:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 184 states have (on average 1.5923913043478262) internal successors, (293), 268 states have internal predecessors, (293), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2024-11-20 19:09:39,472 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 56 [2024-11-20 19:09:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:39,472 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2024-11-20 19:09:39,472 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) [2024-11-20 19:09:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2024-11-20 19:09:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 19:09:39,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:39,473 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] [2024-11-20 19:09:39,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 19:09:39,676 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 [2024-11-20 19:09:39,677 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)] === [2024-11-20 19:09:39,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1728585839, now seen corresponding path program 1 times [2024-11-20 19:09:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:39,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77562324] [2024-11-20 19:09:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat