./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ace794fa35bd3dd49302fe61957917bbb7565f1b1f34293812fc47531868d51 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:13:06,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:13:06,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:13:06,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:13:06,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:13:06,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:13:06,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:13:06,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:13:06,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:13:06,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:13:06,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:13:06,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:13:06,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:13:06,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:13:06,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:13:06,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:13:06,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:13:06,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:13:06,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:13:06,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:13:06,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:13:06,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:13:06,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:13:06,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:13:06,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:13:06,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:13:06,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:13:06,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:13:06,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:13:06,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:13:06,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:13:06,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:13:06,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:13:06,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:13:06,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:13:06,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:13:06,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:13:06,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:13:06,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:13:06,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ace794fa35bd3dd49302fe61957917bbb7565f1b1f34293812fc47531868d51 [2024-11-19 11:13:07,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:13:07,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:13:07,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:13:07,073 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:13:07,074 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:13:07,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c [2024-11-19 11:13:08,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:13:08,553 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:13:08,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c [2024-11-19 11:13:08,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dc19c31/51babdd6bd1c443799412be18e8d8ab5/FLAG6db28dc9d [2024-11-19 11:13:08,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dc19c31/51babdd6bd1c443799412be18e8d8ab5 [2024-11-19 11:13:08,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:13:08,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:13:08,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:13:08,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:13:08,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:13:08,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08, skipping insertion in model container [2024-11-19 11:13:08,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,595 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:13:08,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:13:08,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:13:08,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:13:08,758 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:13:08,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08 WrapperNode [2024-11-19 11:13:08,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:13:08,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:13:08,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:13:08,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:13:08,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,812 INFO L138 Inliner]: procedures = 16, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-11-19 11:13:08,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:13:08,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:13:08,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:13:08,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:13:08,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,872 INFO L175 MemorySlicer]: Split 29 memory accesses to 6 slices as follows [2, 4, 5, 5, 8, 5]. 28 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 1, 1, 2, 3, 2]. [2024-11-19 11:13:08,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:13:08,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:13:08,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:13:08,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:13:08,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (1/1) ... [2024-11-19 11:13:08,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:13:08,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:08,934 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) [2024-11-19 11:13:08,936 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 [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:13:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:13:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:13:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:13:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:13:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:13:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:13:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:13:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:13:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:13:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_40_0 [2024-11-19 11:13:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_40_0 [2024-11-19 11:13:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:13:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:13:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:13:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:13:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:13:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:13:09,095 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:13:09,100 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:13:09,489 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-19 11:13:09,493 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:13:09,514 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:13:09,519 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 11:13:09,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:13:09 BoogieIcfgContainer [2024-11-19 11:13:09,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:13:09,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:13:09,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:13:09,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:13:09,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:13:08" (1/3) ... [2024-11-19 11:13:09,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:13:09, skipping insertion in model container [2024-11-19 11:13:09,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:08" (2/3) ... [2024-11-19 11:13:09,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:13:09, skipping insertion in model container [2024-11-19 11:13:09,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:13:09" (3/3) ... [2024-11-19 11:13:09,528 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_prodbin-ll.c [2024-11-19 11:13:09,543 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:13:09,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-19 11:13:09,624 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:13:09,642 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;@2ec46b92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:13:09,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-19 11:13:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 53 states have internal predecessors, (57), 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) [2024-11-19 11:13:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:13:09,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:09,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:09,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:09,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash -29049519, now seen corresponding path program 1 times [2024-11-19 11:13:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287077603] [2024-11-19 11:13:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287077603] [2024-11-19 11:13:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287077603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:09,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:13:09,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454130173] [2024-11-19 11:13:09,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:09,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 11:13:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 11:13:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:13:09,926 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 53 states have internal predecessors, (57), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:09,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:09,943 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2024-11-19 11:13:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 11:13:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 11:13:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:09,949 INFO L225 Difference]: With dead ends: 114 [2024-11-19 11:13:09,949 INFO L226 Difference]: Without dead ends: 52 [2024-11-19 11:13:09,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:13:09,954 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:09,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-19 11:13:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-19 11:13:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-11-19 11:13:09,980 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 8 [2024-11-19 11:13:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:09,981 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-11-19 11:13:09,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2024-11-19 11:13:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:13:09,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:09,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:09,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:13:09,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:09,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:09,983 INFO L85 PathProgramCache]: Analyzing trace with hash 28208783, now seen corresponding path program 1 times [2024-11-19 11:13:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770913983] [2024-11-19 11:13:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:10,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223895194] [2024-11-19 11:13:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:10,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:10,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:10,032 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) [2024-11-19 11:13:10,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:13:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:10,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 11:13:10,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:10,246 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 [2024-11-19 11:13:10,257 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 [2024-11-19 11:13:10,331 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 30 treesize of output 18 [2024-11-19 11:13:10,340 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 [2024-11-19 11:13:10,345 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 25 treesize of output 17 [2024-11-19 11:13:10,349 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 [2024-11-19 11:13:10,414 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 [2024-11-19 11:13:10,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-19 11:13:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:10,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770913983] [2024-11-19 11:13:10,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223895194] [2024-11-19 11:13:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223895194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:10,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81280170] [2024-11-19 11:13:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:10,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:10,498 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:10,698 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2024-11-19 11:13:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:13:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 11:13:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:10,700 INFO L225 Difference]: With dead ends: 90 [2024-11-19 11:13:10,700 INFO L226 Difference]: Without dead ends: 89 [2024-11-19 11:13:10,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:13:10,702 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 72 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:10,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 235 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-19 11:13:10,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2024-11-19 11:13:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 58 states have internal predecessors, (65), 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) [2024-11-19 11:13:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-19 11:13:10,719 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 8 [2024-11-19 11:13:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:10,720 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-19 11:13:10,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-19 11:13:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 11:13:10,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:10,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:10,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:13:10,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:10,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:10,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 874472310, now seen corresponding path program 1 times [2024-11-19 11:13:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664303287] [2024-11-19 11:13:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368465271] [2024-11-19 11:13:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:10,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:10,970 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) [2024-11-19 11:13:10,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:13:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:11,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 11:13:11,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:11,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:11,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:11,173 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 30 treesize of output 18 [2024-11-19 11:13:11,176 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 [2024-11-19 11:13:11,181 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 23 treesize of output 15 [2024-11-19 11:13:11,187 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 [2024-11-19 11:13:11,240 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 [2024-11-19 11:13:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-19 11:13:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:11,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664303287] [2024-11-19 11:13:11,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368465271] [2024-11-19 11:13:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368465271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685096480] [2024-11-19 11:13:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:11,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:11,263 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-11-19 11:13:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:11,410 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2024-11-19 11:13:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:13:11,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 9 [2024-11-19 11:13:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:11,412 INFO L225 Difference]: With dead ends: 89 [2024-11-19 11:13:11,412 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 11:13:11,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:13:11,413 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 69 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:11,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 239 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 11:13:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2024-11-19 11:13:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 58 states have internal predecessors, (64), 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) [2024-11-19 11:13:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-11-19 11:13:11,418 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 9 [2024-11-19 11:13:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:11,418 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-11-19 11:13:11,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-11-19 11:13:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-11-19 11:13:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 11:13:11,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:11,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:11,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:13:11,622 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,SelfDestructingSolverStorable2 [2024-11-19 11:13:11,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_0_to_40_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:11,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1338837873, now seen corresponding path program 1 times [2024-11-19 11:13:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:11,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333024647] [2024-11-19 11:13:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333024647] [2024-11-19 11:13:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333024647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:11,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728761583] [2024-11-19 11:13:11,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:11,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:11,870 INFO L87 Difference]: Start difference. First operand 65 states and 73 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) [2024-11-19 11:13:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:12,066 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-19 11:13:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:12,066 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 [2024-11-19 11:13:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:12,068 INFO L225 Difference]: With dead ends: 102 [2024-11-19 11:13:12,068 INFO L226 Difference]: Without dead ends: 101 [2024-11-19 11:13:12,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:12,069 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:12,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 207 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-19 11:13:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-11-19 11:13:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 77 states have internal predecessors, (92), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-19 11:13:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2024-11-19 11:13:12,082 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 10 [2024-11-19 11:13:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:12,083 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2024-11-19 11:13:12,083 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) [2024-11-19 11:13:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2024-11-19 11:13:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 11:13:12,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:12,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:12,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 11:13:12,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_0_to_40_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:12,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1445698856, now seen corresponding path program 1 times [2024-11-19 11:13:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:12,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493607316] [2024-11-19 11:13:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:12,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493607316] [2024-11-19 11:13:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493607316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:12,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:12,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436815846] [2024-11-19 11:13:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:12,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:12,278 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-19 11:13:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:12,492 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2024-11-19 11:13:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 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 [2024-11-19 11:13:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:12,493 INFO L225 Difference]: With dead ends: 101 [2024-11-19 11:13:12,493 INFO L226 Difference]: Without dead ends: 100 [2024-11-19 11:13:12,493 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 [2024-11-19 11:13:12,494 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 67 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:12,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 255 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-19 11:13:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2024-11-19 11:13:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5) internal successors, (90), 77 states have internal predecessors, (90), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-19 11:13:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-11-19 11:13:12,504 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 11 [2024-11-19 11:13:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:12,504 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-11-19 11:13:12,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-19 11:13:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-11-19 11:13:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 11:13:12,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:12,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:12,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 11:13:12,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_0_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:12,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1866991533, now seen corresponding path program 1 times [2024-11-19 11:13:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511700639] [2024-11-19 11:13:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:12,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054966957] [2024-11-19 11:13:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:12,529 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) [2024-11-19 11:13:12,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:13:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:12,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-19 11:13:12,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:12,604 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 [2024-11-19 11:13:12,606 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 [2024-11-19 11:13:12,611 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 11 [2024-11-19 11:13:12,614 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 11 [2024-11-19 11:13:12,670 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 19 treesize of output 11 [2024-11-19 11:13:12,678 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 19 treesize of output 11 [2024-11-19 11:13:12,724 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 23 treesize of output 15 [2024-11-19 11:13:12,731 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 19 treesize of output 11 [2024-11-19 11:13:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:12,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:12,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511700639] [2024-11-19 11:13:12,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054966957] [2024-11-19 11:13:12,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054966957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:12,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:12,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:12,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276212388] [2024-11-19 11:13:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:12,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:12,750 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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) [2024-11-19 11:13:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:13,028 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2024-11-19 11:13:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:13:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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 [2024-11-19 11:13:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:13,031 INFO L225 Difference]: With dead ends: 121 [2024-11-19 11:13:13,031 INFO L226 Difference]: Without dead ends: 120 [2024-11-19 11:13:13,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:13:13,032 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 94 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:13,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 235 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-19 11:13:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2024-11-19 11:13:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.56) internal successors, (117), 94 states have internal predecessors, (117), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-19 11:13:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2024-11-19 11:13:13,046 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 12 [2024-11-19 11:13:13,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:13,046 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2024-11-19 11:13:13,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 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) [2024-11-19 11:13:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2024-11-19 11:13:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 11:13:13,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:13,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:13,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:13:13,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:13,251 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_0_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:13,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2042162630, now seen corresponding path program 1 times [2024-11-19 11:13:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:13,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313965625] [2024-11-19 11:13:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:13,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344276948] [2024-11-19 11:13:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:13,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:13,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:13,267 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) [2024-11-19 11:13:13,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:13:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:13,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-19 11:13:13,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:13,355 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 [2024-11-19 11:13:13,357 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 [2024-11-19 11:13:13,359 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 11 [2024-11-19 11:13:13,363 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 11 [2024-11-19 11:13:13,398 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 19 treesize of output 11 [2024-11-19 11:13:13,403 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 19 treesize of output 11 [2024-11-19 11:13:13,533 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 21 treesize of output 13 [2024-11-19 11:13:13,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:13:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:13,704 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313965625] [2024-11-19 11:13:13,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344276948] [2024-11-19 11:13:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344276948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:13,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934465060] [2024-11-19 11:13:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:13,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:13,706 INFO L87 Difference]: Start difference. First operand 104 states and 137 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) [2024-11-19 11:13:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:14,449 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2024-11-19 11:13:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:13:14,450 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 [2024-11-19 11:13:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:14,450 INFO L225 Difference]: With dead ends: 118 [2024-11-19 11:13:14,451 INFO L226 Difference]: Without dead ends: 117 [2024-11-19 11:13:14,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:13:14,451 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:14,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 244 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 11:13:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-19 11:13:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2024-11-19 11:13:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 94 states have internal predecessors, (116), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-19 11:13:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 136 transitions. [2024-11-19 11:13:14,459 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 136 transitions. Word has length 13 [2024-11-19 11:13:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:14,459 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 136 transitions. [2024-11-19 11:13:14,460 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) [2024-11-19 11:13:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 136 transitions. [2024-11-19 11:13:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:13:14,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:14,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:14,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 11:13:14,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:14,665 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_0_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:14,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash 178608392, now seen corresponding path program 1 times [2024-11-19 11:13:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650861428] [2024-11-19 11:13:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:14,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:14,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650861428] [2024-11-19 11:13:14,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650861428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:14,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:14,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508495836] [2024-11-19 11:13:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:14,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:14,879 INFO L87 Difference]: Start difference. First operand 104 states and 136 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:14,961 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2024-11-19 11:13:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-19 11:13:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:14,963 INFO L225 Difference]: With dead ends: 111 [2024-11-19 11:13:14,963 INFO L226 Difference]: Without dead ends: 110 [2024-11-19 11:13:14,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:14,964 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:14,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 248 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-19 11:13:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-11-19 11:13:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 94 states have internal predecessors, (115), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-19 11:13:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2024-11-19 11:13:14,972 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 22 [2024-11-19 11:13:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:14,972 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2024-11-19 11:13:14,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2024-11-19 11:13:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 11:13:14,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:14,972 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] [2024-11-19 11:13:14,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 11:13:14,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_0_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:14,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1241902844, now seen corresponding path program 1 times [2024-11-19 11:13:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:14,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125110529] [2024-11-19 11:13:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:15,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:15,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125110529] [2024-11-19 11:13:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125110529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:15,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:15,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291383662] [2024-11-19 11:13:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:15,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:15,096 INFO L87 Difference]: Start difference. First operand 104 states and 135 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) [2024-11-19 11:13:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:15,167 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2024-11-19 11:13:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:15,168 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 [2024-11-19 11:13:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:15,168 INFO L225 Difference]: With dead ends: 116 [2024-11-19 11:13:15,168 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 11:13:15,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:15,169 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 43 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:15,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 254 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 11:13:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2024-11-19 11:13:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 94 states have internal predecessors, (113), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-19 11:13:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2024-11-19 11:13:15,175 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 23 [2024-11-19 11:13:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:15,176 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2024-11-19 11:13:15,176 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) [2024-11-19 11:13:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2024-11-19 11:13:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 11:13:15,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:15,176 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] [2024-11-19 11:13:15,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 11:13:15,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_0_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:15,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1241892914, now seen corresponding path program 1 times [2024-11-19 11:13:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355750772] [2024-11-19 11:13:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:15,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355750772] [2024-11-19 11:13:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355750772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:15,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:15,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127974190] [2024-11-19 11:13:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:15,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:15,383 INFO L87 Difference]: Start difference. First operand 104 states and 133 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) [2024-11-19 11:13:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:15,460 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2024-11-19 11:13:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:15,463 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 [2024-11-19 11:13:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:15,465 INFO L225 Difference]: With dead ends: 109 [2024-11-19 11:13:15,465 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 11:13:15,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:15,466 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:15,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 251 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 11:13:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-11-19 11:13:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 94 states have internal predecessors, (112), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-19 11:13:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-19 11:13:15,474 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 23 [2024-11-19 11:13:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:15,474 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-19 11:13:15,474 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) [2024-11-19 11:13:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-19 11:13:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:13:15,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:15,479 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] [2024-11-19 11:13:15,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 11:13:15,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:15,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash -156143378, now seen corresponding path program 1 times [2024-11-19 11:13:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927797198] [2024-11-19 11:13:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:15,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:15,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927797198] [2024-11-19 11:13:15,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927797198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:15,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:13:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967313289] [2024-11-19 11:13:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:15,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 11:13:15,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:15,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 11:13:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 11:13:15,706 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:15,786 INFO L93 Difference]: Finished difference Result 122 states and 150 transitions. [2024-11-19 11:13:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:13:15,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-19 11:13:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:15,787 INFO L225 Difference]: With dead ends: 122 [2024-11-19 11:13:15,788 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 11:13:15,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:13:15,789 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 202 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 [2024-11-19 11:13:15,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 202 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 11:13:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2024-11-19 11:13:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 94 states have internal predecessors, (112), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2024-11-19 11:13:15,805 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 24 [2024-11-19 11:13:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:15,805 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2024-11-19 11:13:15,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2024-11-19 11:13:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:13:15,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:15,806 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] [2024-11-19 11:13:15,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 11:13:15,806 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_0_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:15,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -155717430, now seen corresponding path program 1 times [2024-11-19 11:13:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641359899] [2024-11-19 11:13:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:15,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:15,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641359899] [2024-11-19 11:13:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641359899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:15,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:15,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159616603] [2024-11-19 11:13:15,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:15,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:15,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:15,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:15,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:15,938 INFO L87 Difference]: Start difference. First operand 106 states and 134 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) [2024-11-19 11:13:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:15,993 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2024-11-19 11:13:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:15,993 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 [2024-11-19 11:13:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:15,994 INFO L225 Difference]: With dead ends: 109 [2024-11-19 11:13:15,994 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 11:13:15,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:15,995 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:15,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 261 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 11:13:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-19 11:13:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 94 states have internal predecessors, (110), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2024-11-19 11:13:16,000 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 24 [2024-11-19 11:13:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,001 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2024-11-19 11:13:16,001 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) [2024-11-19 11:13:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2024-11-19 11:13:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:13:16,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,001 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] [2024-11-19 11:13:16,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 11:13:16,001 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_0_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:16,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash -156025270, now seen corresponding path program 1 times [2024-11-19 11:13:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967160253] [2024-11-19 11:13:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967160253] [2024-11-19 11:13:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967160253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071339764] [2024-11-19 11:13:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:16,199 INFO L87 Difference]: Start difference. First operand 106 states and 132 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) [2024-11-19 11:13:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:16,312 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-11-19 11:13:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:16,313 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 [2024-11-19 11:13:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:16,313 INFO L225 Difference]: With dead ends: 110 [2024-11-19 11:13:16,313 INFO L226 Difference]: Without dead ends: 109 [2024-11-19 11:13:16,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:16,314 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:16,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 240 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-19 11:13:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2024-11-19 11:13:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 94 states have internal predecessors, (109), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 131 transitions. [2024-11-19 11:13:16,327 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 131 transitions. Word has length 24 [2024-11-19 11:13:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,327 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 131 transitions. [2024-11-19 11:13:16,328 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) [2024-11-19 11:13:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 131 transitions. [2024-11-19 11:13:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 11:13:16,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,328 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] [2024-11-19 11:13:16,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 11:13:16,329 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_0_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:16,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -532272962, now seen corresponding path program 1 times [2024-11-19 11:13:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714477308] [2024-11-19 11:13:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714477308] [2024-11-19 11:13:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714477308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028915326] [2024-11-19 11:13:16,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:16,457 INFO L87 Difference]: Start difference. First operand 106 states and 131 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) [2024-11-19 11:13:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:16,539 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2024-11-19 11:13:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:16,539 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 [2024-11-19 11:13:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:16,540 INFO L225 Difference]: With dead ends: 124 [2024-11-19 11:13:16,540 INFO L226 Difference]: Without dead ends: 123 [2024-11-19 11:13:16,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:16,541 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 54 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:16,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 230 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-19 11:13:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2024-11-19 11:13:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 94 states have internal predecessors, (107), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2024-11-19 11:13:16,547 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 25 [2024-11-19 11:13:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,547 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2024-11-19 11:13:16,547 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) [2024-11-19 11:13:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2024-11-19 11:13:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 11:13:16,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,548 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] [2024-11-19 11:13:16,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 11:13:16,548 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_0_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:16,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash -541816012, now seen corresponding path program 1 times [2024-11-19 11:13:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579076643] [2024-11-19 11:13:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579076643] [2024-11-19 11:13:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579076643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686111610] [2024-11-19 11:13:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:16,668 INFO L87 Difference]: Start difference. First operand 106 states and 129 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) [2024-11-19 11:13:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:16,737 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2024-11-19 11:13:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:16,737 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 [2024-11-19 11:13:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:16,738 INFO L225 Difference]: With dead ends: 109 [2024-11-19 11:13:16,739 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 11:13:16,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:16,740 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 31 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:16,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 243 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 11:13:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-19 11:13:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.394736842105263) internal successors, (106), 94 states have internal predecessors, (106), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2024-11-19 11:13:16,748 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 25 [2024-11-19 11:13:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,748 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2024-11-19 11:13:16,748 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) [2024-11-19 11:13:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2024-11-19 11:13:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 11:13:16,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,750 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:16,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 11:13:16,750 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_0_to_40_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:16,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash 679407436, now seen corresponding path program 1 times [2024-11-19 11:13:16,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530015300] [2024-11-19 11:13:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530015300] [2024-11-19 11:13:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530015300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:16,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028904623] [2024-11-19 11:13:16,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:16,886 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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) [2024-11-19 11:13:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:16,972 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2024-11-19 11:13:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:16,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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 [2024-11-19 11:13:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:16,973 INFO L225 Difference]: With dead ends: 123 [2024-11-19 11:13:16,973 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 11:13:16,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:13:16,974 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 52 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:16,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 272 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 11:13:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2024-11-19 11:13:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.368421052631579) internal successors, (104), 94 states have internal predecessors, (104), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 11:13:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2024-11-19 11:13:16,980 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 26 [2024-11-19 11:13:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,980 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2024-11-19 11:13:16,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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) [2024-11-19 11:13:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2024-11-19 11:13:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:13:16,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,981 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:16,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 11:13:16,981 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 11:13:16,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -439147335, now seen corresponding path program 1 times [2024-11-19 11:13:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791549659] [2024-11-19 11:13:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169073592] [2024-11-19 11:13:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:17,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:17,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:17,012 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) [2024-11-19 11:13:17,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:13:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:17,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-19 11:13:17,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:17,126 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 23 treesize of output 15 [2024-11-19 11:13:17,130 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 [2024-11-19 11:13:46,088 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-11-19 11:13:46,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 46 [2024-11-19 11:13:51,056 INFO L349 Elim1Store]: treesize reduction 90, result has 47.7 percent of original size [2024-11-19 11:13:51,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 231 [2024-11-19 11:14:07,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:14:07,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 597 treesize of output 713 [2024-11-19 11:14:08,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:14:08,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 474 treesize of output 646 [2024-11-19 11:14:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:21,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:30,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791549659] [2024-11-19 11:14:30,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:30,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169073592] [2024-11-19 11:14:30,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169073592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:30,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:30,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-19 11:14:30,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10610402] [2024-11-19 11:14:30,320 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:30,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:14:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:14:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=634, Unknown=15, NotChecked=0, Total=756 [2024-11-19 11:14:30,321 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:34,337 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] [2024-11-19 11:14:38,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:14:46,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]