./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-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 ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:18:29,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:18:29,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:18:29,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:18:29,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:18:29,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:18:29,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:18:29,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:18:29,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:18:29,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:18:29,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:18:29,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:18:29,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:18:29,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:18:29,574 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:18:29,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:18:29,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:18:29,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:18:29,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:18:29,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:18:29,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:18:29,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:18:29,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:18:29,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:18:29,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:18:29,576 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:18:29,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:18:29,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:18:29,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:18:29,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:18:29,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:18:29,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:18:29,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:18:29,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:18:29,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:18:29,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:18:29,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:18:29,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:18:29,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:18:29,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:18:29,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:18:29,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:18:29,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:18:29,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:18:29,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-11-09 12:18:29,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:18:29,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:18:29,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:18:29,845 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:18:29,845 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:18:29,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-09 12:18:31,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:18:31,288 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:18:31,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-09 12:18:31,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1158f7a/27d86b756ccb47658a7cdc5ccd33c797/FLAG6fbcb058e [2024-11-09 12:18:31,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1158f7a/27d86b756ccb47658a7cdc5ccd33c797 [2024-11-09 12:18:31,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:18:31,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:18:31,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:18:31,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:18:31,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:18:31,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd21b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31, skipping insertion in model container [2024-11-09 12:18:31,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,338 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:18:31,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:18:31,534 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:18:31,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:18:31,568 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:18:31,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31 WrapperNode [2024-11-09 12:18:31,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:18:31,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:18:31,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:18:31,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:18:31,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,600 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-09 12:18:31,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:18:31,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:18:31,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:18:31,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:18:31,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,676 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 9, 2, 12, 8]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 1, 2, 2]. [2024-11-09 12:18:31,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:18:31,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:18:31,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:18:31,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:18:31,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (1/1) ... [2024-11-09 12:18:31,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:18:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:31,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 12:18:31,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 12:18:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:18:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:18:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:18:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-11-09 12:18:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:18:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:18:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:18:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:18:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:18:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:18:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:18:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:18:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:18:31,830 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:18:31,832 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:18:32,135 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-09 12:18:32,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:18:32,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:18:32,153 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:18:32,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:18:32 BoogieIcfgContainer [2024-11-09 12:18:32,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:18:32,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:18:32,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:18:32,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:18:32,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:18:31" (1/3) ... [2024-11-09 12:18:32,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:18:32, skipping insertion in model container [2024-11-09 12:18:32,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:18:31" (2/3) ... [2024-11-09 12:18:32,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:18:32, skipping insertion in model container [2024-11-09 12:18:32,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:18:32" (3/3) ... [2024-11-09 12:18:32,161 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-11-09 12:18:32,175 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:18:32,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-09 12:18:32,240 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:18:32,245 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;@16c1f79b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:18:32,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-09 12:18:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 12:18:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 12:18:32,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:32,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 12:18:32,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:32,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-11-09 12:18:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470894810] [2024-11-09 12:18:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470894810] [2024-11-09 12:18:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470894810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368502424] [2024-11-09 12:18:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:32,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:32,699 INFO L87 Difference]: Start difference. First operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:32,919 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-09 12:18:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 12:18:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:32,931 INFO L225 Difference]: With dead ends: 328 [2024-11-09 12:18:32,932 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 12:18:32,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:32,941 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 118 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:32,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 12:18:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-11-09 12:18:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 144 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-09 12:18:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-09 12:18:33,022 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-11-09 12:18:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:33,022 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-09 12:18:33,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:18:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-09 12:18:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 12:18:33,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:33,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:33,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:18:33,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:33,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-11-09 12:18:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996039059] [2024-11-09 12:18:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:33,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:33,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:33,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:33,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996039059] [2024-11-09 12:18:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996039059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716805165] [2024-11-09 12:18:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:33,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:33,238 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:33,370 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-11-09 12:18:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2024-11-09 12:18:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:33,372 INFO L225 Difference]: With dead ends: 194 [2024-11-09 12:18:33,374 INFO L226 Difference]: Without dead ends: 192 [2024-11-09 12:18:33,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:33,375 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:33,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-09 12:18:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-11-09 12:18:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 144 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-09 12:18:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-09 12:18:33,392 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-11-09 12:18:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:33,392 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-09 12:18:33,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-09 12:18:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 12:18:33,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:33,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:33,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:18:33,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:33,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-11-09 12:18:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:33,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921347366] [2024-11-09 12:18:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:33,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:33,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921347366] [2024-11-09 12:18:33,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921347366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:33,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:33,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996162036] [2024-11-09 12:18:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:33,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:33,542 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:33,662 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-11-09 12:18:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 18 [2024-11-09 12:18:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:33,664 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:18:33,664 INFO L226 Difference]: Without dead ends: 190 [2024-11-09 12:18:33,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:33,665 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:33,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-09 12:18:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-11-09 12:18:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 144 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-09 12:18:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-11-09 12:18:33,685 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-11-09 12:18:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:33,685 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-11-09 12:18:33,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-11-09 12:18:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 12:18:33,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:33,686 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] [2024-11-09 12:18:33,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:18:33,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:33,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-11-09 12:18:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732615737] [2024-11-09 12:18:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304357373] [2024-11-09 12:18:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:33,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:33,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:33,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:18:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:33,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:18:33,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:33,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:33,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732615737] [2024-11-09 12:18:33,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304357373] [2024-11-09 12:18:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304357373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:18:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139402679] [2024-11-09 12:18:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:33,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:18:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:18:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:33,982 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:34,115 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-11-09 12:18:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 20 [2024-11-09 12:18:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:34,117 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:18:34,117 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 12:18:34,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:18:34,118 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:34,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 689 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 12:18:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 175. [2024-11-09 12:18:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 159 states have internal predecessors, (182), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2024-11-09 12:18:34,137 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 20 [2024-11-09 12:18:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:34,138 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2024-11-09 12:18:34,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:18:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2024-11-09 12:18:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 12:18:34,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:34,138 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:34,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:18:34,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:34,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:34,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-11-09 12:18:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890957479] [2024-11-09 12:18:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019494393] [2024-11-09 12:18:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:34,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:34,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:34,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:18:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:34,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 12:18:34,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:34,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:34,489 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 [2024-11-09 12:18:34,619 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 [2024-11-09 12:18:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:34,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890957479] [2024-11-09 12:18:34,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019494393] [2024-11-09 12:18:34,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019494393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:34,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:18:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-09 12:18:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810957147] [2024-11-09 12:18:34,744 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:34,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:18:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:18:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:18:34,746 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:39,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:18:43,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:18:47,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:18:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:47,153 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-09 12:18:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 12:18:47,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-09 12:18:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:47,155 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:18:47,155 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 12:18:47,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-09 12:18:47,156 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:47,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 871 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 12:18:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 12:18:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-11-09 12:18:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6605504587155964) internal successors, (181), 159 states have internal predecessors, (181), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-11-09 12:18:47,170 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-11-09 12:18:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:47,171 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-11-09 12:18:47,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:18:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-11-09 12:18:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 12:18:47,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:47,174 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-09 12:18:47,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:47,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:47,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:47,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-11-09 12:18:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109063545] [2024-11-09 12:18:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903178409] [2024-11-09 12:18:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:47,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:47,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:47,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:18:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:47,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 12:18:47,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:47,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:47,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109063545] [2024-11-09 12:18:47,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903178409] [2024-11-09 12:18:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903178409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584522373] [2024-11-09 12:18:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:47,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:47,596 INFO L87 Difference]: Start difference. First operand 175 states and 206 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:47,737 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-09 12:18:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:47,738 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-11-09 12:18:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:47,739 INFO L225 Difference]: With dead ends: 229 [2024-11-09 12:18:47,739 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 12:18:47,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:47,741 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 142 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:47,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 570 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 12:18:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-09 12:18:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.651376146788991) internal successors, (180), 159 states have internal predecessors, (180), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-11-09 12:18:47,754 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-11-09 12:18:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:47,754 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-11-09 12:18:47,754 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-11-09 12:18:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:18:47,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:47,756 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-09 12:18:47,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:47,956 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 [2024-11-09 12:18:47,957 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:47,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-11-09 12:18:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785979588] [2024-11-09 12:18:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:48,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:48,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785979588] [2024-11-09 12:18:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785979588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743042578] [2024-11-09 12:18:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:48,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:48,109 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:48,250 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-09 12:18:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-09 12:18:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:48,251 INFO L225 Difference]: With dead ends: 212 [2024-11-09 12:18:48,251 INFO L226 Difference]: Without dead ends: 210 [2024-11-09 12:18:48,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:48,252 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:48,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-09 12:18:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-09 12:18:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6330275229357798) internal successors, (178), 159 states have internal predecessors, (178), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-11-09 12:18:48,259 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-11-09 12:18:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:48,259 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-11-09 12:18:48,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-11-09 12:18:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 12:18:48,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:48,260 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-09 12:18:48,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 12:18:48,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:48,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-11-09 12:18:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171484904] [2024-11-09 12:18:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227899973] [2024-11-09 12:18:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:48,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:48,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:18:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:48,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 12:18:48,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:48,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:48,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:18:48,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:48,890 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 38 treesize of output 26 [2024-11-09 12:18:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:18:48,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:48,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171484904] [2024-11-09 12:18:48,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:48,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227899973] [2024-11-09 12:18:48,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227899973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:48,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:18:48,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-09 12:18:48,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818232916] [2024-11-09 12:18:48,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:48,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 12:18:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 12:18:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-09 12:18:48,970 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:18:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:49,776 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-09 12:18:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 12:18:49,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-09 12:18:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:49,777 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:18:49,777 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 12:18:49,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 12:18:49,778 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 288 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:49,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 974 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:18:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 12:18:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-09 12:18:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.614678899082569) internal successors, (176), 159 states have internal predecessors, (176), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-09 12:18:49,788 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-11-09 12:18:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:49,788 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-09 12:18:49,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:18:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-09 12:18:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 12:18:49,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:49,789 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1] [2024-11-09 12:18:49,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:49,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:49,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:49,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-11-09 12:18:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817307711] [2024-11-09 12:18:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:50,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817307711] [2024-11-09 12:18:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817307711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:50,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690614236] [2024-11-09 12:18:50,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:50,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:50,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:50,095 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:50,202 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-09 12:18:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-09 12:18:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:50,204 INFO L225 Difference]: With dead ends: 212 [2024-11-09 12:18:50,204 INFO L226 Difference]: Without dead ends: 210 [2024-11-09 12:18:50,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:50,205 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 103 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:50,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 533 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-09 12:18:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-09 12:18:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 159 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-09 12:18:50,212 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-11-09 12:18:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:50,213 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-09 12:18:50,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-09 12:18:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:18:50,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:50,214 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1] [2024-11-09 12:18:50,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 12:18:50,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:50,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-11-09 12:18:50,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624071208] [2024-11-09 12:18:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:50,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624071208] [2024-11-09 12:18:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624071208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:50,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:50,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788718436] [2024-11-09 12:18:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:50,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:50,326 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:50,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:50,555 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-11-09 12:18:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:50,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-09 12:18:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:50,556 INFO L225 Difference]: With dead ends: 210 [2024-11-09 12:18:50,556 INFO L226 Difference]: Without dead ends: 208 [2024-11-09 12:18:50,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:50,557 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 97 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:50,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 614 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:18:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-09 12:18:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-09 12:18:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5779816513761469) internal successors, (172), 159 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-11-09 12:18:50,563 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-11-09 12:18:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:50,563 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-11-09 12:18:50,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-11-09 12:18:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 12:18:50,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:50,564 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2024-11-09 12:18:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 12:18:50,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:50,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-11-09 12:18:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476818756] [2024-11-09 12:18:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:50,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:18:50,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476818756] [2024-11-09 12:18:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476818756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314975016] [2024-11-09 12:18:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:50,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:50,844 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:51,265 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-11-09 12:18:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-09 12:18:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:51,266 INFO L225 Difference]: With dead ends: 200 [2024-11-09 12:18:51,266 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 12:18:51,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:18:51,267 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:51,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 585 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 12:18:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-09 12:18:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 159 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-09 12:18:51,274 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-11-09 12:18:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:51,275 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-09 12:18:51,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:18:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-09 12:18:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 12:18:51,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:51,275 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:51,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 12:18:51,275 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:51,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-11-09 12:18:51,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:51,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97271341] [2024-11-09 12:18:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:51,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97271341] [2024-11-09 12:18:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97271341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674768293] [2024-11-09 12:18:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:51,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:51,404 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:51,478 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-11-09 12:18:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:51,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-09 12:18:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:51,480 INFO L225 Difference]: With dead ends: 185 [2024-11-09 12:18:51,480 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 12:18:51,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:51,481 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:51,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 566 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 12:18:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-09 12:18:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 161 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-11-09 12:18:51,487 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-11-09 12:18:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:51,487 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-11-09 12:18:51,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-11-09 12:18:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 12:18:51,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:51,488 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:51,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:18:51,488 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:51,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-11-09 12:18:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368881144] [2024-11-09 12:18:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368881144] [2024-11-09 12:18:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368881144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272825682] [2024-11-09 12:18:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:51,587 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:51,664 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-11-09 12:18:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-09 12:18:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:51,665 INFO L225 Difference]: With dead ends: 204 [2024-11-09 12:18:51,665 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 12:18:51,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:18:51,666 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:51,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 561 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 12:18:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-11-09 12:18:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 163 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:18:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-09 12:18:51,672 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-11-09 12:18:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:51,672 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-09 12:18:51,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-09 12:18:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:18:51,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:51,673 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:51,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 12:18:51,674 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:51,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-11-09 12:18:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201761559] [2024-11-09 12:18:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:51,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:18:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:18:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:18:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:51,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201761559] [2024-11-09 12:18:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201761559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:51,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446556245] [2024-11-09 12:18:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:51,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:51,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:51,822 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:51,906 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-11-09 12:18:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:18:51,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-09 12:18:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:51,907 INFO L225 Difference]: With dead ends: 187 [2024-11-09 12:18:51,907 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 12:18:51,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:51,908 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 100 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:51,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 354 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 12:18:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-09 12:18:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-09 12:18:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-09 12:18:51,914 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-11-09 12:18:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:51,915 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-09 12:18:51,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-09 12:18:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:18:51,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:51,916 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:51,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 12:18:51,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:51,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-11-09 12:18:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496597906] [2024-11-09 12:18:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496597906] [2024-11-09 12:18:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496597906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371275123] [2024-11-09 12:18:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:52,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:52,182 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:52,305 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-11-09 12:18:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:52,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-09 12:18:52,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:52,306 INFO L225 Difference]: With dead ends: 195 [2024-11-09 12:18:52,306 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 12:18:52,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:52,307 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 60 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:52,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 621 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 12:18:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-11-09 12:18:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-09 12:18:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-09 12:18:52,315 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-11-09 12:18:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:52,315 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-09 12:18:52,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-09 12:18:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:18:52,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:52,316 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:52,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 12:18:52,316 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_40_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:52,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-11-09 12:18:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736395403] [2024-11-09 12:18:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736395403] [2024-11-09 12:18:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736395403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563068360] [2024-11-09 12:18:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:52,549 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:52,683 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-11-09 12:18:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:18:52,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-09 12:18:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:52,685 INFO L225 Difference]: With dead ends: 195 [2024-11-09 12:18:52,685 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 12:18:52,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:52,685 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:52,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 626 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 12:18:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-11-09 12:18:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 166 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-09 12:18:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-11-09 12:18:52,695 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-11-09 12:18:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:52,695 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-11-09 12:18:52,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 12:18:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-11-09 12:18:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 12:18:52,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:52,696 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:52,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 12:18:52,696 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:52,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-11-09 12:18:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423855966] [2024-11-09 12:18:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:52,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423855966] [2024-11-09 12:18:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423855966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89675461] [2024-11-09 12:18:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:52,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:52,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:52,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:52,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:18:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:53,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 12:18:53,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:53,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:53,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:53,431 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-09 12:18:53,432 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 43 treesize of output 43 [2024-11-09 12:18:53,494 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 [2024-11-09 12:18:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 12:18:53,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 12:18:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89675461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:53,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:18:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-09 12:18:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843290641] [2024-11-09 12:18:53,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:53,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 12:18:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 12:18:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-09 12:18:53,822 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 12:18:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:54,455 INFO L93 Difference]: Finished difference Result 205 states and 219 transitions. [2024-11-09 12:18:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 12:18:54,455 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-11-09 12:18:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:54,456 INFO L225 Difference]: With dead ends: 205 [2024-11-09 12:18:54,457 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 12:18:54,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:18:54,458 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 412 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:54,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1490 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 12:18:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2024-11-09 12:18:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-09 12:18:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-11-09 12:18:54,465 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-11-09 12:18:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:54,465 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-11-09 12:18:54,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 12:18:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-11-09 12:18:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 12:18:54,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:54,466 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:54,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 12:18:54,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 12:18:54,667 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:54,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-11-09 12:18:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545475586] [2024-11-09 12:18:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:54,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:54,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:54,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545475586] [2024-11-09 12:18:54,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545475586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208850524] [2024-11-09 12:18:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:54,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:54,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:54,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:18:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:54,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 12:18:54,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:54,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:54,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:55,303 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-09 12:18:55,303 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 43 treesize of output 43 [2024-11-09 12:18:55,352 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 [2024-11-09 12:18:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 12:18:55,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 12:18:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208850524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:18:55,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:18:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-09 12:18:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315735215] [2024-11-09 12:18:55,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:55,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 12:18:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 12:18:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-09 12:18:55,650 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 12:18:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:56,281 INFO L93 Difference]: Finished difference Result 334 states and 356 transitions. [2024-11-09 12:18:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 12:18:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2024-11-09 12:18:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:56,284 INFO L225 Difference]: With dead ends: 334 [2024-11-09 12:18:56,285 INFO L226 Difference]: Without dead ends: 331 [2024-11-09 12:18:56,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:18:56,287 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 513 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:56,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1855 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:18:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-09 12:18:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 257. [2024-11-09 12:18:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.521978021978022) internal successors, (277), 230 states have internal predecessors, (277), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 323 transitions. [2024-11-09 12:18:56,300 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 323 transitions. Word has length 57 [2024-11-09 12:18:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:56,300 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 323 transitions. [2024-11-09 12:18:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 12:18:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 323 transitions. [2024-11-09 12:18:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 12:18:56,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:56,301 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:56,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 12:18:56,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 12:18:56,502 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:56,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1285119462, now seen corresponding path program 1 times [2024-11-09 12:18:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610432083] [2024-11-09 12:18:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:18:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:18:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:18:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 12:18:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 12:18:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610432083] [2024-11-09 12:18:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610432083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:56,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421369744] [2024-11-09 12:18:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:56,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:56,609 INFO L87 Difference]: Start difference. First operand 257 states and 323 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:56,700 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2024-11-09 12:18:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-09 12:18:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:56,703 INFO L225 Difference]: With dead ends: 262 [2024-11-09 12:18:56,704 INFO L226 Difference]: Without dead ends: 260 [2024-11-09 12:18:56,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:56,704 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 89 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:56,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 336 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-09 12:18:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2024-11-09 12:18:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.510989010989011) internal successors, (275), 230 states have internal predecessors, (275), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2024-11-09 12:18:56,720 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 60 [2024-11-09 12:18:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:56,721 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2024-11-09 12:18:56,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2024-11-09 12:18:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 12:18:56,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:56,721 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:56,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 12:18:56,721 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:56,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1950782204, now seen corresponding path program 1 times [2024-11-09 12:18:56,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:56,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997496987] [2024-11-09 12:18:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:18:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:18:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:18:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:18:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 12:18:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 12:18:56,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:56,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997496987] [2024-11-09 12:18:56,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997496987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:56,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:56,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:56,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059638918] [2024-11-09 12:18:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:56,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:56,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:56,834 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:56,921 INFO L93 Difference]: Finished difference Result 260 states and 322 transitions. [2024-11-09 12:18:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:18:56,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-09 12:18:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:56,922 INFO L225 Difference]: With dead ends: 260 [2024-11-09 12:18:56,923 INFO L226 Difference]: Without dead ends: 258 [2024-11-09 12:18:56,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:56,923 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 83 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:56,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 331 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-09 12:18:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-09 12:18:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.5) internal successors, (273), 230 states have internal predecessors, (273), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2024-11-09 12:18:56,932 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 62 [2024-11-09 12:18:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:56,932 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2024-11-09 12:18:56,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2024-11-09 12:18:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 12:18:56,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:56,933 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:56,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 12:18:56,933 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:56,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2095961054, now seen corresponding path program 1 times [2024-11-09 12:18:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:56,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921165397] [2024-11-09 12:18:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682628108] [2024-11-09 12:18:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:56,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:56,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:56,949 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:56,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:18:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 12:18:57,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:57,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:57,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:18:57,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921165397] [2024-11-09 12:18:57,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682628108] [2024-11-09 12:18:57,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682628108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:57,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:57,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:18:57,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35378224] [2024-11-09 12:18:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:57,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:18:57,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:18:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:57,108 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:57,237 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2024-11-09 12:18:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:18:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-09 12:18:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:57,239 INFO L225 Difference]: With dead ends: 284 [2024-11-09 12:18:57,239 INFO L226 Difference]: Without dead ends: 282 [2024-11-09 12:18:57,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:18:57,240 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:57,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 449 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-09 12:18:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-09 12:18:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.489010989010989) internal successors, (271), 230 states have internal predecessors, (271), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 317 transitions. [2024-11-09 12:18:57,250 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 317 transitions. Word has length 64 [2024-11-09 12:18:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:57,250 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 317 transitions. [2024-11-09 12:18:57,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:18:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 317 transitions. [2024-11-09 12:18:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 12:18:57,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:57,251 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:57,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 12:18:57,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:57,451 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:57,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 322785458, now seen corresponding path program 1 times [2024-11-09 12:18:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239710127] [2024-11-09 12:18:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 12:18:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 12:18:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239710127] [2024-11-09 12:18:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239710127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:57,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:57,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:57,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550303046] [2024-11-09 12:18:57,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:57,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:57,542 INFO L87 Difference]: Start difference. First operand 257 states and 317 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:57,672 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2024-11-09 12:18:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-11-09 12:18:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:57,676 INFO L225 Difference]: With dead ends: 257 [2024-11-09 12:18:57,676 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 12:18:57,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:57,677 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:57,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 369 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 12:18:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-09 12:18:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 229 states have internal predecessors, (268), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2024-11-09 12:18:57,693 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2024-11-09 12:18:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:57,693 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2024-11-09 12:18:57,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2024-11-09 12:18:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 12:18:57,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:57,694 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:57,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 12:18:57,694 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:57,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1416414653, now seen corresponding path program 1 times [2024-11-09 12:18:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:57,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636234361] [2024-11-09 12:18:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 12:18:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 12:18:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636234361] [2024-11-09 12:18:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636234361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662712460] [2024-11-09 12:18:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:57,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:57,795 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:57,861 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2024-11-09 12:18:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-09 12:18:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:57,863 INFO L225 Difference]: With dead ends: 256 [2024-11-09 12:18:57,863 INFO L226 Difference]: Without dead ends: 255 [2024-11-09 12:18:57,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:57,864 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:57,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 464 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-09 12:18:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-09 12:18:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.456043956043956) internal successors, (265), 228 states have internal predecessors, (265), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2024-11-09 12:18:57,874 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 67 [2024-11-09 12:18:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:57,874 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2024-11-09 12:18:57,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2024-11-09 12:18:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 12:18:57,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:57,876 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:57,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 12:18:57,876 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:57,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 959181332, now seen corresponding path program 1 times [2024-11-09 12:18:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377365338] [2024-11-09 12:18:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 12:18:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 12:18:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:57,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377365338] [2024-11-09 12:18:57,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377365338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:57,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:57,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413138729] [2024-11-09 12:18:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:57,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:57,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:57,948 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:58,011 INFO L93 Difference]: Finished difference Result 255 states and 311 transitions. [2024-11-09 12:18:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:58,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-09 12:18:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:58,013 INFO L225 Difference]: With dead ends: 255 [2024-11-09 12:18:58,013 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 12:18:58,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:58,014 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:58,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 364 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:18:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 12:18:58,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-09 12:18:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 227 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2024-11-09 12:18:58,024 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 68 [2024-11-09 12:18:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:58,024 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2024-11-09 12:18:58,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2024-11-09 12:18:58,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 12:18:58,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:58,025 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:58,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 12:18:58,025 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash -330149729, now seen corresponding path program 1 times [2024-11-09 12:18:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:58,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633315049] [2024-11-09 12:18:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:18:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:18:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:18:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 12:18:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 12:18:58,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:58,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633315049] [2024-11-09 12:18:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633315049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:18:58,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:18:58,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:18:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454280982] [2024-11-09 12:18:58,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:18:58,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:18:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:18:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:18:58,087 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:58,153 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2024-11-09 12:18:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:18:58,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-09 12:18:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:58,155 INFO L225 Difference]: With dead ends: 254 [2024-11-09 12:18:58,155 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 12:18:58,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:18:58,155 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:58,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 456 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:18:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 12:18:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-09 12:18:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 226 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 12:18:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-11-09 12:18:58,165 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 69 [2024-11-09 12:18:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:58,165 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-11-09 12:18:58,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:18:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-11-09 12:18:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 12:18:58,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:58,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-09 12:18:58,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 12:18:58,166 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:58,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1644706954, now seen corresponding path program 1 times [2024-11-09 12:18:58,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:58,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983945467] [2024-11-09 12:18:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:58,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906135932] [2024-11-09 12:18:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:58,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:58,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:58,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:58,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:18:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:58,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 12:18:58,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:58,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:18:58,309 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 [2024-11-09 12:18:58,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:18:58,509 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 [2024-11-09 12:18:58,577 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 [2024-11-09 12:18:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 12:18:58,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:18:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:18:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983945467] [2024-11-09 12:18:58,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:18:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906135932] [2024-11-09 12:18:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906135932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:18:58,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:18:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 12:18:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454730796] [2024-11-09 12:18:58,752 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:18:58,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 12:18:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:18:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 12:18:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-09 12:18:58,753 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 12:18:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:18:59,285 INFO L93 Difference]: Finished difference Result 255 states and 308 transitions. [2024-11-09 12:18:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 12:18:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2024-11-09 12:18:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:18:59,290 INFO L225 Difference]: With dead ends: 255 [2024-11-09 12:18:59,290 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 12:18:59,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 12:18:59,291 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 309 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:18:59,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1138 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:18:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 12:18:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-09 12:18:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3934426229508197) internal successors, (255), 225 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:18:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 303 transitions. [2024-11-09 12:18:59,301 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 303 transitions. Word has length 70 [2024-11-09 12:18:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:18:59,301 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 303 transitions. [2024-11-09 12:18:59,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 12:18:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 303 transitions. [2024-11-09 12:18:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 12:18:59,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:18:59,303 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-09 12:18:59,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 12:18:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 12:18:59,504 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:18:59,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:18:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash 553692033, now seen corresponding path program 1 times [2024-11-09 12:18:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:18:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268571087] [2024-11-09 12:18:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:18:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:18:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759391284] [2024-11-09 12:18:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:18:59,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:18:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:18:59,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:18:59,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 12:18:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:18:59,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 12:18:59,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:18:59,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:59,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:18:59,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:18:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:18:59,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268571087] [2024-11-09 12:19:00,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759391284] [2024-11-09 12:19:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759391284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:19:00,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:19:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-09 12:19:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840514284] [2024-11-09 12:19:00,063 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:00,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 12:19:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 12:19:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-09 12:19:00,064 INFO L87 Difference]: Start difference. First operand 253 states and 303 transitions. Second operand has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:19:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:00,503 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2024-11-09 12:19:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 12:19:00,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2024-11-09 12:19:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:00,505 INFO L225 Difference]: With dead ends: 292 [2024-11-09 12:19:00,505 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 12:19:00,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2024-11-09 12:19:00,506 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 240 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:00,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1176 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:19:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 12:19:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 253. [2024-11-09 12:19:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3879781420765027) internal successors, (254), 225 states have internal predecessors, (254), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 302 transitions. [2024-11-09 12:19:00,519 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 302 transitions. Word has length 71 [2024-11-09 12:19:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:00,520 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 302 transitions. [2024-11-09 12:19:00,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 12:19:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 302 transitions. [2024-11-09 12:19:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 12:19:00,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:00,521 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:00,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 12:19:00,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 12:19:00,721 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:00,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash 656013135, now seen corresponding path program 1 times [2024-11-09 12:19:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:00,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835263779] [2024-11-09 12:19:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685356445] [2024-11-09 12:19:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:00,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:00,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:00,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 12:19:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:00,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 12:19:00,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:00,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:19:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:19:00,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:19:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835263779] [2024-11-09 12:19:00,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685356445] [2024-11-09 12:19:00,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685356445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:19:00,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:19:00,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:19:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115676367] [2024-11-09 12:19:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:19:00,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:19:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:19:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:00,930 INFO L87 Difference]: Start difference. First operand 253 states and 302 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:01,048 INFO L93 Difference]: Finished difference Result 278 states and 326 transitions. [2024-11-09 12:19:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:19:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-11-09 12:19:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:01,053 INFO L225 Difference]: With dead ends: 278 [2024-11-09 12:19:01,053 INFO L226 Difference]: Without dead ends: 277 [2024-11-09 12:19:01,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:19:01,054 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 112 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:01,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 342 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:19:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-09 12:19:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 255. [2024-11-09 12:19:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 226 states have internal predecessors, (256), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 304 transitions. [2024-11-09 12:19:01,064 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 304 transitions. Word has length 72 [2024-11-09 12:19:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:01,064 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 304 transitions. [2024-11-09 12:19:01,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 304 transitions. [2024-11-09 12:19:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 12:19:01,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:01,065 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:01,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 12:19:01,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 12:19:01,266 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:01,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429158, now seen corresponding path program 1 times [2024-11-09 12:19:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390732107] [2024-11-09 12:19:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:01,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:01,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007289169] [2024-11-09 12:19:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:01,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:01,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:01,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 12:19:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 12:19:01,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:01,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:19:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:19:01,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:19:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390732107] [2024-11-09 12:19:01,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007289169] [2024-11-09 12:19:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007289169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:19:01,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:19:01,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:19:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945399008] [2024-11-09 12:19:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:19:01,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:19:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:19:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:01,458 INFO L87 Difference]: Start difference. First operand 255 states and 304 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:01,586 INFO L93 Difference]: Finished difference Result 277 states and 325 transitions. [2024-11-09 12:19:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:19:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-09 12:19:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:01,588 INFO L225 Difference]: With dead ends: 277 [2024-11-09 12:19:01,588 INFO L226 Difference]: Without dead ends: 276 [2024-11-09 12:19:01,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:19:01,589 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 109 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:01,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 344 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:19:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-09 12:19:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 256. [2024-11-09 12:19:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 186 states have (on average 1.381720430107527) internal successors, (257), 227 states have internal predecessors, (257), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2024-11-09 12:19:01,599 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 73 [2024-11-09 12:19:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:01,599 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2024-11-09 12:19:01,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2024-11-09 12:19:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 12:19:01,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:01,600 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:01,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 12:19:01,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 12:19:01,800 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:01,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash -931565391, now seen corresponding path program 1 times [2024-11-09 12:19:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725440192] [2024-11-09 12:19:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:01,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:19:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:19:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:19:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:19:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 12:19:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 12:19:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 12:19:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:01,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725440192] [2024-11-09 12:19:01,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725440192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:19:01,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:19:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:19:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381446514] [2024-11-09 12:19:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:19:01,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:19:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:19:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:01,925 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:02,083 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2024-11-09 12:19:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:19:02,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-11-09 12:19:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:02,089 INFO L225 Difference]: With dead ends: 270 [2024-11-09 12:19:02,089 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 12:19:02,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:02,089 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 67 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:02,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 309 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:19:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 12:19:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258. [2024-11-09 12:19:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.377659574468085) internal successors, (259), 229 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2024-11-09 12:19:02,100 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 74 [2024-11-09 12:19:02,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:02,100 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2024-11-09 12:19:02,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:02,100 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2024-11-09 12:19:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 12:19:02,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:02,101 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:02,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 12:19:02,101 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:02,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1881138669, now seen corresponding path program 1 times [2024-11-09 12:19:02,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:02,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354967662] [2024-11-09 12:19:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444046404] [2024-11-09 12:19:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:02,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:02,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:02,120 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:02,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 12:19:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:02,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 12:19:02,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:02,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:19:02,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:19:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:19:02,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:19:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354967662] [2024-11-09 12:19:02,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444046404] [2024-11-09 12:19:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444046404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:19:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:19:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:19:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054792151] [2024-11-09 12:19:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:19:02,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:19:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:19:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:19:02,427 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:02,630 INFO L93 Difference]: Finished difference Result 274 states and 322 transitions. [2024-11-09 12:19:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:19:02,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-11-09 12:19:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:02,631 INFO L225 Difference]: With dead ends: 274 [2024-11-09 12:19:02,631 INFO L226 Difference]: Without dead ends: 272 [2024-11-09 12:19:02,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:19:02,632 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 90 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:02,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 442 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:19:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-09 12:19:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-09 12:19:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 190 states have (on average 1.3736842105263158) internal successors, (261), 231 states have internal predecessors, (261), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 309 transitions. [2024-11-09 12:19:02,642 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 309 transitions. Word has length 76 [2024-11-09 12:19:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:02,642 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 309 transitions. [2024-11-09 12:19:02,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 309 transitions. [2024-11-09 12:19:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 12:19:02,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:02,643 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-09 12:19:02,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 12:19:02,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:02,848 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:02,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 865008927, now seen corresponding path program 1 times [2024-11-09 12:19:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207480067] [2024-11-09 12:19:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:02,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472430510] [2024-11-09 12:19:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:02,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:02,867 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:02,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 12:19:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:02,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 12:19:02,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:02,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:19:03,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:19:03,107 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 [2024-11-09 12:19:03,193 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 [2024-11-09 12:19:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:19:03,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207480067] [2024-11-09 12:19:03,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472430510] [2024-11-09 12:19:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472430510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:19:03,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:19:03,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-09 12:19:03,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728050177] [2024-11-09 12:19:03,277 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:03,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:19:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:19:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:19:03,278 INFO L87 Difference]: Start difference. First operand 260 states and 309 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 12:19:07,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:11,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:15,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:19,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:19,820 INFO L93 Difference]: Finished difference Result 276 states and 323 transitions. [2024-11-09 12:19:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 12:19:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-11-09 12:19:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:19,822 INFO L225 Difference]: With dead ends: 276 [2024-11-09 12:19:19,822 INFO L226 Difference]: Without dead ends: 275 [2024-11-09 12:19:19,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2024-11-09 12:19:19,823 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 325 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 34 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:19,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1261 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 641 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2024-11-09 12:19:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-09 12:19:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 263. [2024-11-09 12:19:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 193 states have (on average 1.3523316062176165) internal successors, (261), 233 states have internal predecessors, (261), 20 states have call successors, (20), 7 states have call predecessors, (20), 11 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 309 transitions. [2024-11-09 12:19:19,841 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 309 transitions. Word has length 78 [2024-11-09 12:19:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:19,841 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 309 transitions. [2024-11-09 12:19:19,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 12:19:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 309 transitions. [2024-11-09 12:19:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 12:19:19,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:19,843 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:19:19,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 12:19:20,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 12:19:20,044 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:20,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 406975349, now seen corresponding path program 1 times [2024-11-09 12:19:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40018453] [2024-11-09 12:19:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:19:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:19:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:19:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 12:19:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 12:19:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 12:19:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 12:19:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40018453] [2024-11-09 12:19:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40018453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:19:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:19:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:19:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633547234] [2024-11-09 12:19:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:19:20,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:19:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:19:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:20,196 INFO L87 Difference]: Start difference. First operand 263 states and 309 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:20,302 INFO L93 Difference]: Finished difference Result 271 states and 320 transitions. [2024-11-09 12:19:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:19:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-09 12:19:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:20,303 INFO L225 Difference]: With dead ends: 271 [2024-11-09 12:19:20,304 INFO L226 Difference]: Without dead ends: 269 [2024-11-09 12:19:20,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:19:20,304 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 75 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:20,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 292 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:19:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-09 12:19:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2024-11-09 12:19:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 195 states have (on average 1.3487179487179488) internal successors, (263), 235 states have internal predecessors, (263), 20 states have call successors, (20), 7 states have call predecessors, (20), 11 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-09 12:19:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 311 transitions. [2024-11-09 12:19:20,315 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 311 transitions. Word has length 78 [2024-11-09 12:19:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:20,315 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 311 transitions. [2024-11-09 12:19:20,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 12:19:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 311 transitions. [2024-11-09 12:19:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 12:19:20,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:20,316 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 12:19:20,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 12:19:20,317 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:20,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1045473022, now seen corresponding path program 1 times [2024-11-09 12:19:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545898923] [2024-11-09 12:19:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:19:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955726800] [2024-11-09 12:19:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:20,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:20,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:20,336 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:20,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 12:19:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:20,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 12:19:20,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:20,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:19:20,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:19:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:19:20,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545898923] [2024-11-09 12:19:20,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:19:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955726800] [2024-11-09 12:19:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955726800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:19:20,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:19:20,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-09 12:19:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533127052] [2024-11-09 12:19:20,819 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:20,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:19:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:19:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:19:20,820 INFO L87 Difference]: Start difference. First operand 265 states and 311 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:19:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:19:21,097 INFO L93 Difference]: Finished difference Result 342 states and 374 transitions. [2024-11-09 12:19:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:19:21,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-09 12:19:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:19:21,099 INFO L225 Difference]: With dead ends: 342 [2024-11-09 12:19:21,099 INFO L226 Difference]: Without dead ends: 341 [2024-11-09 12:19:21,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:19:21,099 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 224 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:19:21,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 841 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:19:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-09 12:19:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 287. [2024-11-09 12:19:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 253 states have internal predecessors, (290), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-09 12:19:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 342 transitions. [2024-11-09 12:19:21,111 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 342 transitions. Word has length 79 [2024-11-09 12:19:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:19:21,112 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 342 transitions. [2024-11-09 12:19:21,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 12:19:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 342 transitions. [2024-11-09 12:19:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 12:19:21,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:19:21,112 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 12:19:21,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 12:19:21,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:21,317 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:19:21,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:19:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1950074623, now seen corresponding path program 1 times [2024-11-09 12:19:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:19:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373750493] [2024-11-09 12:19:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:21,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:19:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 12:19:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 12:19:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 12:19:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 12:19:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 12:19:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 12:19:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:19:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373750493] [2024-11-09 12:19:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373750493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:19:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760544971] [2024-11-09 12:19:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:19:21,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:19:21,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:19:21,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:19:21,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 12:19:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:19:21,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 12:19:21,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:19:21,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:19:21,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:19:21,856 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 [2024-11-09 12:19:22,271 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 [2024-11-09 12:19:22,334 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-09 12:19:22,335 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 43 treesize of output 43 [2024-11-09 12:19:22,493 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 [2024-11-09 12:19:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 12:19:22,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:19:22,768 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 22 [2024-11-09 12:19:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 12:19:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760544971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:19:22,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:19:22,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 33 [2024-11-09 12:19:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90879222] [2024-11-09 12:19:22,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:19:22,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 12:19:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:19:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 12:19:22,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 12:19:22,833 INFO L87 Difference]: Start difference. First operand 287 states and 342 transitions. Second operand has 34 states, 30 states have (on average 5.166666666666667) internal successors, (155), 28 states have internal predecessors, (155), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-09 12:19:26,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:31,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:35,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:39,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:43,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:47,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:51,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:19:56,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:20:00,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:20:04,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:20:08,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]