./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.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 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:08:45,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:08:45,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:08:45,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:08:45,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:08:45,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:08:45,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:08:45,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:08:45,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:08:45,996 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:08:45,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:08:45,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:08:45,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:08:45,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:08:45,998 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:08:45,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:08:45,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:08:45,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:08:45,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:08:45,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:08:45,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:08:46,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:08:46,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:08:46,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:08:46,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:08:46,002 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:08:46,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:08:46,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:08:46,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:08:46,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:08:46,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:08:46,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:08:46,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:08:46,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:08:46,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:08:46,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:08:46,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:08:46,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:08:46,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:08:46,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:08:46,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:08:46,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:08:46,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:08:46,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:08:46,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 [2024-11-22 23:08:46,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:08:46,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:08:46,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:08:46,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:08:46,308 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:08:46,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2024-11-22 23:08:47,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:08:47,971 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:08:47,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2024-11-22 23:08:47,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4d02689/3c3701823ba44f62b7866e4e51c1b221/FLAG5ca204b6d [2024-11-22 23:08:47,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4d02689/3c3701823ba44f62b7866e4e51c1b221 [2024-11-22 23:08:47,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:08:47,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:08:47,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:08:47,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:08:48,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:08:48,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:08:47" (1/1) ... [2024-11-22 23:08:48,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8ffb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48, skipping insertion in model container [2024-11-22 23:08:48,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:08:47" (1/1) ... [2024-11-22 23:08:48,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:08:48,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:08:48,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:08:48,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:08:48,287 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:08:48,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48 WrapperNode [2024-11-22 23:08:48,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:08:48,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:08:48,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:08:48,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:08:48,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,329 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-22 23:08:48,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:08:48,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:08:48,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:08:48,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:08:48,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,358 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 7, 5, 7, 2, 4]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 2, 1, 1, 2]. [2024-11-22 23:08:48,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:08:48,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:08:48,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:08:48,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:08:48,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (1/1) ... [2024-11-22 23:08:48,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:08:48,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:48,407 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) [2024-11-22 23:08:48,412 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 [2024-11-22 23:08:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:08:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:08:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 23:08:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 23:08:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 23:08:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 23:08:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 23:08:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 23:08:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 23:08:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-22 23:08:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-22 23:08:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:08:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 23:08:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 23:08:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 23:08:48,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:08:48,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:08:48,960 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-22 23:08:48,961 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:08:49,012 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:08:49,013 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 23:08:49,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:08:49 BoogieIcfgContainer [2024-11-22 23:08:49,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:08:49,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:08:49,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:08:49,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:08:49,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:08:47" (1/3) ... [2024-11-22 23:08:49,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2816b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:08:49, skipping insertion in model container [2024-11-22 23:08:49,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:48" (2/3) ... [2024-11-22 23:08:49,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2816b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:08:49, skipping insertion in model container [2024-11-22 23:08:49,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:08:49" (3/3) ... [2024-11-22 23:08:49,030 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll2.c [2024-11-22 23:08:49,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:08:49,048 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-11-22 23:08:49,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:08:49,099 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;@18337652, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:08:49,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-22 23:08:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:08:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 23:08:49,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:49,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 23:08:49,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:49,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1895540477, now seen corresponding path program 1 times [2024-11-22 23:08:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254055280] [2024-11-22 23:08:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:49,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029120976] [2024-11-22 23:08:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:49,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:49,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:49,294 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) [2024-11-22 23:08:49,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:08:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:49,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 23:08:49,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:49,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:49,504 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 [2024-11-22 23:08:49,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:08:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:49,612 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254055280] [2024-11-22 23:08:49,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029120976] [2024-11-22 23:08:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029120976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:08:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078175677] [2024-11-22 23:08:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:49,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:08:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:08:49,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:08:49,649 INFO L87 Difference]: Start difference. First operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:49,903 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2024-11-22 23:08:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:08:49,905 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 [2024-11-22 23:08:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:49,914 INFO L225 Difference]: With dead ends: 200 [2024-11-22 23:08:49,915 INFO L226 Difference]: Without dead ends: 118 [2024-11-22 23:08:49,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:49,925 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:49,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 300 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:08:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-22 23:08:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2024-11-22 23:08:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 82 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-22 23:08:49,972 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 6 [2024-11-22 23:08:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:49,973 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-22 23:08:49,973 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) [2024-11-22 23:08:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-22 23:08:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:08:49,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:49,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:49,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 23:08:50,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 23:08:50,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:50,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1367787394, now seen corresponding path program 1 times [2024-11-22 23:08:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181844033] [2024-11-22 23:08:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579838524] [2024-11-22 23:08:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:50,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:50,229 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) [2024-11-22 23:08:50,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:08:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:50,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 23:08:50,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:50,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:50,362 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 [2024-11-22 23:08:50,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:08:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:50,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181844033] [2024-11-22 23:08:50,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579838524] [2024-11-22 23:08:50,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579838524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:50,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:50,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:08:50,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573699278] [2024-11-22 23:08:50,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:50,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:08:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:08:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:08:50,472 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:50,655 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2024-11-22 23:08:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:08:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 23:08:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:50,657 INFO L225 Difference]: With dead ends: 118 [2024-11-22 23:08:50,657 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 23:08:50,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:50,659 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:50,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 271 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 23:08:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2024-11-22 23:08:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-11-22 23:08:50,670 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 7 [2024-11-22 23:08:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:50,670 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-11-22 23:08:50,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-11-22 23:08:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 23:08:50,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:50,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 23:08:50,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-22 23:08:50,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:50,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1399556295, now seen corresponding path program 1 times [2024-11-22 23:08:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197949614] [2024-11-22 23:08:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197949614] [2024-11-22 23:08:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197949614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:08:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602941965] [2024-11-22 23:08:51,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:51,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:08:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:51,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:08:51,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:08:51,256 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:51,432 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2024-11-22 23:08:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:08:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 23:08:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:51,434 INFO L225 Difference]: With dead ends: 116 [2024-11-22 23:08:51,434 INFO L226 Difference]: Without dead ends: 115 [2024-11-22 23:08:51,434 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 [2024-11-22 23:08:51,435 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:51,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 326 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-22 23:08:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2024-11-22 23:08:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 82 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-22 23:08:51,445 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 10 [2024-11-22 23:08:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:51,445 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-22 23:08:51,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-22 23:08:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 23:08:51,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:51,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:51,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:08:51,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:51,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash 436572230, now seen corresponding path program 1 times [2024-11-22 23:08:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4304035] [2024-11-22 23:08:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4304035] [2024-11-22 23:08:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4304035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:51,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:51,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:08:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211708896] [2024-11-22 23:08:51,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:51,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:08:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:08:51,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:08:51,623 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:51,756 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2024-11-22 23:08:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:08:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-22 23:08:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:51,759 INFO L225 Difference]: With dead ends: 115 [2024-11-22 23:08:51,761 INFO L226 Difference]: Without dead ends: 114 [2024-11-22 23:08:51,761 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 [2024-11-22 23:08:51,762 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 72 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:51,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 286 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-22 23:08:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2024-11-22 23:08:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 82 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2024-11-22 23:08:51,778 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 11 [2024-11-22 23:08:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:51,778 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2024-11-22 23:08:51,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2024-11-22 23:08:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 23:08:51,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:51,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:51,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 23:08:51,780 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:51,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 648837289, now seen corresponding path program 1 times [2024-11-22 23:08:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711826825] [2024-11-22 23:08:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115114922] [2024-11-22 23:08:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:51,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:51,822 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) [2024-11-22 23:08:51,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:08:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:51,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 23:08:51,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:51,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:51,925 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 [2024-11-22 23:08:52,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:08:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:52,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:52,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711826825] [2024-11-22 23:08:52,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:52,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115114922] [2024-11-22 23:08:52,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115114922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:52,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:52,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:08:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636511279] [2024-11-22 23:08:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:52,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:08:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:08:52,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:08:52,019 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:52,130 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2024-11-22 23:08:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:08:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-22 23:08:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:52,132 INFO L225 Difference]: With dead ends: 122 [2024-11-22 23:08:52,132 INFO L226 Difference]: Without dead ends: 121 [2024-11-22 23:08:52,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:52,133 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 77 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:52,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 286 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-22 23:08:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 89. [2024-11-22 23:08:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 82 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2024-11-22 23:08:52,142 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 12 [2024-11-22 23:08:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:52,142 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2024-11-22 23:08:52,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2024-11-22 23:08:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 23:08:52,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:52,143 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:52,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:08:52,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:52,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:52,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1360880472, now seen corresponding path program 1 times [2024-11-22 23:08:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808205658] [2024-11-22 23:08:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524374801] [2024-11-22 23:08:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:52,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:52,372 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) [2024-11-22 23:08:52,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:08:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:52,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 23:08:52,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:52,465 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 [2024-11-22 23:08:52,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:52,474 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 [2024-11-22 23:08:52,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:08:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:52,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808205658] [2024-11-22 23:08:52,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524374801] [2024-11-22 23:08:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524374801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:08:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415690322] [2024-11-22 23:08:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:52,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:08:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:08:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:52,723 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:53,078 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2024-11-22 23:08:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 23:08:53,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 23:08:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:53,080 INFO L225 Difference]: With dead ends: 117 [2024-11-22 23:08:53,080 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 23:08:53,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:08:53,081 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:53,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 369 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:08:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 23:08:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2024-11-22 23:08:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 82 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2024-11-22 23:08:53,099 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 13 [2024-11-22 23:08:53,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:53,099 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2024-11-22 23:08:53,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2024-11-22 23:08:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 23:08:53,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:53,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:53,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 23:08:53,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:53,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:53,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash 762378379, now seen corresponding path program 1 times [2024-11-22 23:08:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325148620] [2024-11-22 23:08:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721437522] [2024-11-22 23:08:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:53,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:53,321 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) [2024-11-22 23:08:53,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:08:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:53,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-22 23:08:53,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:53,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:53,423 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 [2024-11-22 23:08:53,427 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 [2024-11-22 23:08:53,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:08:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:53,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:53,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:53,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325148620] [2024-11-22 23:08:53,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:53,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721437522] [2024-11-22 23:08:53,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721437522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:53,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:53,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:08:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024850752] [2024-11-22 23:08:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:53,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:08:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:08:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:53,593 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:53,812 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-22 23:08:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:08:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 23:08:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:53,813 INFO L225 Difference]: With dead ends: 112 [2024-11-22 23:08:53,814 INFO L226 Difference]: Without dead ends: 110 [2024-11-22 23:08:53,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:08:53,814 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 71 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:53,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 325 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-22 23:08:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2024-11-22 23:08:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.537037037037037) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-22 23:08:53,832 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 14 [2024-11-22 23:08:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:53,832 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-22 23:08:53,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-22 23:08:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:08:53,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:53,833 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:53,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 23:08:54,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:54,034 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:54,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash 418095421, now seen corresponding path program 1 times [2024-11-22 23:08:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700219844] [2024-11-22 23:08:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700219844] [2024-11-22 23:08:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700219844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:08:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478792146] [2024-11-22 23:08:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:08:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:08:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:08:54,215 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:08:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:54,295 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-11-22 23:08:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:08:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-22 23:08:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:54,296 INFO L225 Difference]: With dead ends: 114 [2024-11-22 23:08:54,296 INFO L226 Difference]: Without dead ends: 113 [2024-11-22 23:08:54,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:08:54,297 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:54,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 380 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-22 23:08:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2024-11-22 23:08:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 83 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-22 23:08:54,326 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 23 [2024-11-22 23:08:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:54,326 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-22 23:08:54,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:08:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-22 23:08:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:08:54,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:54,327 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] [2024-11-22 23:08:54,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 23:08:54,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:54,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash 76056226, now seen corresponding path program 1 times [2024-11-22 23:08:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942165879] [2024-11-22 23:08:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942165879] [2024-11-22 23:08:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942165879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:54,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:08:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706445497] [2024-11-22 23:08:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:54,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:08:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:08:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:08:54,487 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 23:08:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:54,560 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2024-11-22 23:08:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:08:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2024-11-22 23:08:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:54,561 INFO L225 Difference]: With dead ends: 113 [2024-11-22 23:08:54,561 INFO L226 Difference]: Without dead ends: 112 [2024-11-22 23:08:54,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:08:54,562 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:54,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 383 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-22 23:08:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2024-11-22 23:08:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 84 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-22 23:08:54,572 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 24 [2024-11-22 23:08:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:54,573 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-22 23:08:54,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 23:08:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-22 23:08:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 23:08:54,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:54,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:54,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 23:08:54,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_30_to_38_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1937224225, now seen corresponding path program 1 times [2024-11-22 23:08:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286929566] [2024-11-22 23:08:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435076890] [2024-11-22 23:08:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:54,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:54,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:54,595 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) [2024-11-22 23:08:54,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:08:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:54,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 23:08:54,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:54,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:54,695 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 [2024-11-22 23:08:54,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:08:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:54,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:54,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:54,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286929566] [2024-11-22 23:08:54,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:54,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435076890] [2024-11-22 23:08:54,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435076890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:54,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:54,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:08:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318930517] [2024-11-22 23:08:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:54,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:08:54,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:08:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:08:54,853 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:08:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:54,993 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2024-11-22 23:08:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:08:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-22 23:08:54,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:54,995 INFO L225 Difference]: With dead ends: 124 [2024-11-22 23:08:54,995 INFO L226 Difference]: Without dead ends: 122 [2024-11-22 23:08:54,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:08:54,996 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 70 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:54,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 240 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-22 23:08:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 98. [2024-11-22 23:08:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 90 states have internal predecessors, (92), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:08:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2024-11-22 23:08:55,002 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2024-11-22 23:08:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:55,003 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2024-11-22 23:08:55,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:08:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2024-11-22 23:08:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 23:08:55,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:55,004 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] [2024-11-22 23:08:55,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:08:55,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:55,207 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:55,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 75296849, now seen corresponding path program 1 times [2024-11-22 23:08:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799599417] [2024-11-22 23:08:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124626645] [2024-11-22 23:08:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:55,238 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) [2024-11-22 23:08:55,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:08:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:55,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 23:08:55,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:55,360 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 [2024-11-22 23:08:55,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:55,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:08:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:55,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:55,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799599417] [2024-11-22 23:08:55,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124626645] [2024-11-22 23:08:55,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124626645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:55,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:55,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:08:55,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516896289] [2024-11-22 23:08:55,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:55,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:08:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:08:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:55,598 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:08:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:55,737 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2024-11-22 23:08:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:08:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-22 23:08:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:55,740 INFO L225 Difference]: With dead ends: 117 [2024-11-22 23:08:55,740 INFO L226 Difference]: Without dead ends: 115 [2024-11-22 23:08:55,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:08:55,741 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 156 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:55,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 154 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:08:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-22 23:08:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2024-11-22 23:08:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.462686567164179) internal successors, (98), 94 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:08:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2024-11-22 23:08:55,749 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 26 [2024-11-22 23:08:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:55,750 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2024-11-22 23:08:55,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:08:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2024-11-22 23:08:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 23:08:55,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:55,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:55,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 23:08:55,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:55,956 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:08:55,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 75591236, now seen corresponding path program 1 times [2024-11-22 23:08:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107978382] [2024-11-22 23:08:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:55,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:55,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343975077] [2024-11-22 23:08:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:55,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:55,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:55,988 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) [2024-11-22 23:08:55,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:08:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:56,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 23:08:56,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:56,105 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 [2024-11-22 23:09:04,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:09:04,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-22 23:09:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:04,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:09:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107978382] [2024-11-22 23:09:04,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343975077] [2024-11-22 23:09:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343975077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:04,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:04,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 23:09:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644975403] [2024-11-22 23:09:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:04,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 23:09:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 23:09:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2024-11-22 23:09:04,742 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:08,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:12,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:16,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:20,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:24,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:29,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:33,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:37,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:09:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:37,276 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2024-11-22 23:09:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 23:09:37,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-22 23:09:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:37,278 INFO L225 Difference]: With dead ends: 110 [2024-11-22 23:09:37,278 INFO L226 Difference]: Without dead ends: 108 [2024-11-22 23:09:37,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=62, Invalid=146, Unknown=2, NotChecked=0, Total=210 [2024-11-22 23:09:37,278 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:37,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 384 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 8 Unknown, 0 Unchecked, 32.4s Time] [2024-11-22 23:09:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-22 23:09:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-22 23:09:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 95 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2024-11-22 23:09:37,289 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 26 [2024-11-22 23:09:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:37,289 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2024-11-22 23:09:37,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2024-11-22 23:09:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 23:09:37,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:37,291 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] [2024-11-22 23:09:37,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 23:09:37,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 23:09:37,492 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:37,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1960764888, now seen corresponding path program 1 times [2024-11-22 23:09:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416271393] [2024-11-22 23:09:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988305631] [2024-11-22 23:09:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:37,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:09:37,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:09:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:37,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 23:09:37,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:37,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:09:37,627 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 [2024-11-22 23:09:37,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:09:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:37,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:09:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416271393] [2024-11-22 23:09:37,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988305631] [2024-11-22 23:09:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988305631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:09:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535261785] [2024-11-22 23:09:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:37,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:09:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:09:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:37,754 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:37,884 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2024-11-22 23:09:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:09:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-22 23:09:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:37,885 INFO L225 Difference]: With dead ends: 116 [2024-11-22 23:09:37,885 INFO L226 Difference]: Without dead ends: 114 [2024-11-22 23:09:37,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:09:37,886 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 106 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:37,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 159 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-22 23:09:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-22 23:09:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 96 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2024-11-22 23:09:37,895 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 27 [2024-11-22 23:09:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:37,895 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2024-11-22 23:09:37,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2024-11-22 23:09:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:09:37,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:37,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:37,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 23:09:38,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 23:09:38,097 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:38,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:38,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1375717155, now seen corresponding path program 1 times [2024-11-22 23:09:38,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:38,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987623358] [2024-11-22 23:09:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:38,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467824691] [2024-11-22 23:09:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:38,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:38,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:38,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:09:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:09:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:38,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 23:09:38,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:38,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:09:38,223 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 [2024-11-22 23:09:42,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:09:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:42,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:09:42,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:42,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987623358] [2024-11-22 23:09:42,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467824691] [2024-11-22 23:09:42,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467824691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:42,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:42,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 23:09:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467902576] [2024-11-22 23:09:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:42,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:09:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:42,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:09:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2024-11-22 23:09:42,754 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-22 23:09:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:43,825 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-11-22 23:09:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:09:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 29 [2024-11-22 23:09:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:43,826 INFO L225 Difference]: With dead ends: 122 [2024-11-22 23:09:43,826 INFO L226 Difference]: Without dead ends: 121 [2024-11-22 23:09:43,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=92, Invalid=287, Unknown=1, NotChecked=0, Total=380 [2024-11-22 23:09:43,827 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 72 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:43,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 446 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:09:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-22 23:09:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 107. [2024-11-22 23:09:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 97 states have internal predecessors, (99), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2024-11-22 23:09:43,834 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 29 [2024-11-22 23:09:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:43,834 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2024-11-22 23:09:43,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-22 23:09:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2024-11-22 23:09:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:09:43,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:43,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:43,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 23:09:44,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 23:09:44,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:44,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1591462379, now seen corresponding path program 1 times [2024-11-22 23:09:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737017830] [2024-11-22 23:09:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737017830] [2024-11-22 23:09:44,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737017830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:44,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:09:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909379980] [2024-11-22 23:09:44,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:44,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:09:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:09:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:44,229 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:44,322 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-22 23:09:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:09:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-22 23:09:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:44,323 INFO L225 Difference]: With dead ends: 116 [2024-11-22 23:09:44,323 INFO L226 Difference]: Without dead ends: 115 [2024-11-22 23:09:44,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:44,324 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:44,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 169 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:44,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-22 23:09:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2024-11-22 23:09:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.408450704225352) internal successors, (100), 98 states have internal predecessors, (100), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-11-22 23:09:44,332 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 30 [2024-11-22 23:09:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:44,332 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-11-22 23:09:44,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-11-22 23:09:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:09:44,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:44,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:44,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 23:09:44,333 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:44,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash -302441080, now seen corresponding path program 1 times [2024-11-22 23:09:44,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:44,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410003960] [2024-11-22 23:09:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763954979] [2024-11-22 23:09:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:44,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:44,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:09:44,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:09:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:44,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 23:09:44,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:44,471 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 [2024-11-22 23:09:44,475 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 [2024-11-22 23:09:45,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:09:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:45,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:09:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410003960] [2024-11-22 23:09:45,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763954979] [2024-11-22 23:09:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763954979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:45,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 23:09:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131191493] [2024-11-22 23:09:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:45,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 23:09:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 23:09:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:09:45,240 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2024-11-22 23:09:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:49,539 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2024-11-22 23:09:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:09:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 30 [2024-11-22 23:09:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:49,541 INFO L225 Difference]: With dead ends: 120 [2024-11-22 23:09:49,541 INFO L226 Difference]: Without dead ends: 119 [2024-11-22 23:09:49,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2024-11-22 23:09:49,542 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 56 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:49,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 434 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 23:09:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-22 23:09:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2024-11-22 23:09:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 99 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2024-11-22 23:09:49,551 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 30 [2024-11-22 23:09:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:49,552 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2024-11-22 23:09:49,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2024-11-22 23:09:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2024-11-22 23:09:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:09:49,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:49,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:49,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 23:09:49,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 23:09:49,759 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:49,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2090693396, now seen corresponding path program 1 times [2024-11-22 23:09:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744887810] [2024-11-22 23:09:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:49,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:49,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744887810] [2024-11-22 23:09:49,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744887810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:49,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:49,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:09:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341716555] [2024-11-22 23:09:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:49,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:09:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:09:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:09:49,861 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:49,955 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2024-11-22 23:09:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:09:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-22 23:09:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:49,956 INFO L225 Difference]: With dead ends: 117 [2024-11-22 23:09:49,956 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 23:09:49,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:09:49,957 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:49,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 176 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 23:09:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2024-11-22 23:09:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 100 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:09:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2024-11-22 23:09:49,965 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 31 [2024-11-22 23:09:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:49,966 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2024-11-22 23:09:49,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:09:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2024-11-22 23:09:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 23:09:49,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:49,966 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] [2024-11-22 23:09:49,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 23:09:49,966 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-22 23:09:49,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -386985737, now seen corresponding path program 1 times [2024-11-22 23:09:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526818822] [2024-11-22 23:09:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:49,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017930614] [2024-11-22 23:09:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:49,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:49,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:49,985 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:09:49,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:09:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:50,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 23:09:50,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:50,104 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 [2024-11-22 23:09:50,109 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 [2024-11-22 23:09:50,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:07,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:10:07,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-11-22 23:10:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:10:07,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:10:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526818822] [2024-11-22 23:10:07,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017930614] [2024-11-22 23:10:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017930614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 23:10:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566853218] [2024-11-22 23:10:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:07,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:10:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:10:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=115, Unknown=4, NotChecked=0, Total=156 [2024-11-22 23:10:07,236 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2024-11-22 23:10:11,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:10:15,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:10:23,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]