./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-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 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:09:16,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:09:16,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:09:16,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:09:16,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:09:16,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:09:16,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:09:16,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:09:16,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:09:16,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:09:16,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:09:16,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:09:16,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:09:16,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:09:16,130 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:09:16,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:09:16,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:09:16,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:09:16,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:09:16,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:09:16,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:09:16,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:09:16,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:09:16,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:09:16,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:09:16,135 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:09:16,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:09:16,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:09:16,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:09:16,135 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:09:16,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:09:16,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:09:16,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:09:16,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:09:16,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:16,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:09:16,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:09:16,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:09:16,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:09:16,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:09:16,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:09:16,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:09:16,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:09:16,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:09:16,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe [2024-11-20 19:09:16,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:09:16,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:09:16,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:09:16,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:09:16,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:09:16,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-11-20 19:09:17,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:09:17,795 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:09:17,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-11-20 19:09:17,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927deb698/3ca1d9e50779485e82e1972b68c0b80d/FLAGb871a939d [2024-11-20 19:09:18,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927deb698/3ca1d9e50779485e82e1972b68c0b80d [2024-11-20 19:09:18,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:09:18,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:09:18,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:18,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:09:18,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:09:18,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184352d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18, skipping insertion in model container [2024-11-20 19:09:18,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:09:18,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:18,376 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:09:18,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:18,407 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:09:18,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18 WrapperNode [2024-11-20 19:09:18,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:18,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:18,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:09:18,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:09:18,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,444 INFO L138 Inliner]: procedures = 16, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-11-20 19:09:18,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:18,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:09:18,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:09:18,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:09:18,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,468 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 4, 5, 36, 4]. 71 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, 2, 2, 1]. [2024-11-20 19:09:18,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:09:18,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:09:18,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:09:18,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:09:18,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (1/1) ... [2024-11-20 19:09:18,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:18,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 19:09:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 19:09:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 19:09:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 19:09:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 19:09:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 19:09:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 19:09:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:09:18,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 19:09:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 19:09:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 19:09:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 19:09:18,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 19:09:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-11-20 19:09:18,574 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-11-20 19:09:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 19:09:18,694 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:09:18,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:09:19,263 INFO L? ?]: Removed 370 outVars from TransFormulas that were not future-live. [2024-11-20 19:09:19,263 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:09:19,282 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:09:19,284 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 19:09:19,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:19 BoogieIcfgContainer [2024-11-20 19:09:19,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:09:19,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:09:19,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:09:19,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:09:19,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:09:18" (1/3) ... [2024-11-20 19:09:19,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b608c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:19, skipping insertion in model container [2024-11-20 19:09:19,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:18" (2/3) ... [2024-11-20 19:09:19,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b608c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:19, skipping insertion in model container [2024-11-20 19:09:19,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:19" (3/3) ... [2024-11-20 19:09:19,292 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5-ll.c [2024-11-20 19:09:19,304 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:09:19,304 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-11-20 19:09:19,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:09:19,372 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;@32d1b49a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:09:19,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-20 19:09:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 103 states have (on average 1.854368932038835) internal successors, (191), 188 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 19:09:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 19:09:19,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:19,384 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:19,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:19,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 125491965, now seen corresponding path program 1 times [2024-11-20 19:09:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304519036] [2024-11-20 19:09:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:19,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304519036] [2024-11-20 19:09:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304519036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:19,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 19:09:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315112568] [2024-11-20 19:09:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:19,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 19:09:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 19:09:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 19:09:19,588 INFO L87 Difference]: Start difference. First operand has 195 states, 103 states have (on average 1.854368932038835) internal successors, (191), 188 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:19,614 INFO L93 Difference]: Finished difference Result 386 states and 402 transitions. [2024-11-20 19:09:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 19:09:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 19:09:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:19,627 INFO L225 Difference]: With dead ends: 386 [2024-11-20 19:09:19,627 INFO L226 Difference]: Without dead ends: 188 [2024-11-20 19:09:19,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 19:09:19,633 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:19,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-20 19:09:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-20 19:09:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 98 states have (on average 1.8571428571428572) internal successors, (182), 182 states have internal predecessors, (182), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:09:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2024-11-20 19:09:19,698 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 8 [2024-11-20 19:09:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:19,699 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2024-11-20 19:09:19,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2024-11-20 19:09:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 19:09:19,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:19,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:19,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:09:19,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:19,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash 182750267, now seen corresponding path program 1 times [2024-11-20 19:09:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:19,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090974724] [2024-11-20 19:09:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090974724] [2024-11-20 19:09:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090974724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384004552] [2024-11-20 19:09:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:20,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:20,076 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:20,384 INFO L93 Difference]: Finished difference Result 346 states and 351 transitions. [2024-11-20 19:09:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 19:09:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:20,386 INFO L225 Difference]: With dead ends: 346 [2024-11-20 19:09:20,390 INFO L226 Difference]: Without dead ends: 336 [2024-11-20 19:09:20,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:20,391 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 264 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:20,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 704 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-20 19:09:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 229. [2024-11-20 19:09:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7956204379562044) internal successors, (246), 221 states have internal predecessors, (246), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 257 transitions. [2024-11-20 19:09:20,415 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 257 transitions. Word has length 8 [2024-11-20 19:09:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:20,415 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 257 transitions. [2024-11-20 19:09:20,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 257 transitions. [2024-11-20 19:09:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-20 19:09:20,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:20,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:20,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 19:09:20,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_35_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:20,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:20,417 INFO L85 PathProgramCache]: Analyzing trace with hash 837445765, now seen corresponding path program 1 times [2024-11-20 19:09:20,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:20,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937263172] [2024-11-20 19:09:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937263172] [2024-11-20 19:09:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937263172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:20,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:20,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:20,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137492489] [2024-11-20 19:09:20,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:20,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:20,583 INFO L87 Difference]: Start difference. First operand 229 states and 257 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:20,825 INFO L93 Difference]: Finished difference Result 336 states and 341 transitions. [2024-11-20 19:09:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 18 [2024-11-20 19:09:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:20,827 INFO L225 Difference]: With dead ends: 336 [2024-11-20 19:09:20,828 INFO L226 Difference]: Without dead ends: 328 [2024-11-20 19:09:20,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:20,830 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 220 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:20,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 703 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-20 19:09:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 229. [2024-11-20 19:09:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7372262773722629) internal successors, (238), 221 states have internal predecessors, (238), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2024-11-20 19:09:20,856 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 18 [2024-11-20 19:09:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:20,857 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2024-11-20 19:09:20,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2024-11-20 19:09:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:09:20,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:20,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:20,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 19:09:20,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_35_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:20,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2121651597, now seen corresponding path program 1 times [2024-11-20 19:09:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516994633] [2024-11-20 19:09:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460875288] [2024-11-20 19:09:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:20,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:20,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:09:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:20,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 19:09:20,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:21,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:21,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516994633] [2024-11-20 19:09:21,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460875288] [2024-11-20 19:09:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460875288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874332982] [2024-11-20 19:09:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:21,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:21,119 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:21,358 INFO L93 Difference]: Finished difference Result 328 states and 333 transitions. [2024-11-20 19:09:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-20 19:09:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:21,360 INFO L225 Difference]: With dead ends: 328 [2024-11-20 19:09:21,360 INFO L226 Difference]: Without dead ends: 326 [2024-11-20 19:09:21,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:21,361 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 202 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:21,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 850 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-20 19:09:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 229. [2024-11-20 19:09:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.7226277372262773) internal successors, (236), 221 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2024-11-20 19:09:21,370 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 26 [2024-11-20 19:09:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:21,370 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2024-11-20 19:09:21,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2024-11-20 19:09:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 19:09:21,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:21,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:21,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:09:21,572 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 [2024-11-20 19:09:21,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_35_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:21,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1202275121, now seen corresponding path program 1 times [2024-11-20 19:09:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:21,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529156247] [2024-11-20 19:09:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:21,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529156247] [2024-11-20 19:09:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529156247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469594990] [2024-11-20 19:09:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:21,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:21,699 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:21,896 INFO L93 Difference]: Finished difference Result 326 states and 331 transitions. [2024-11-20 19:09:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 28 [2024-11-20 19:09:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:21,897 INFO L225 Difference]: With dead ends: 326 [2024-11-20 19:09:21,898 INFO L226 Difference]: Without dead ends: 320 [2024-11-20 19:09:21,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:21,898 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 178 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:21,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 715 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-20 19:09:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 229. [2024-11-20 19:09:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 221 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 241 transitions. [2024-11-20 19:09:21,905 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 241 transitions. Word has length 28 [2024-11-20 19:09:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:21,906 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 241 transitions. [2024-11-20 19:09:21,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 241 transitions. [2024-11-20 19:09:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 19:09:21,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:21,907 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:21,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 19:09:21,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_35_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1105935723, now seen corresponding path program 1 times [2024-11-20 19:09:21,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:21,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261524470] [2024-11-20 19:09:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13348329] [2024-11-20 19:09:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:21,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:21,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:09:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:21,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:09:21,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:21,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:22,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261524470] [2024-11-20 19:09:22,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13348329] [2024-11-20 19:09:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13348329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:22,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93686557] [2024-11-20 19:09:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:22,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:22,164 INFO L87 Difference]: Start difference. First operand 229 states and 241 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:22,853 INFO L93 Difference]: Finished difference Result 320 states and 325 transitions. [2024-11-20 19:09:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-20 19:09:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:22,854 INFO L225 Difference]: With dead ends: 320 [2024-11-20 19:09:22,854 INFO L226 Difference]: Without dead ends: 319 [2024-11-20 19:09:22,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:09:22,855 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 166 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:22,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 900 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 19:09:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-20 19:09:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 229. [2024-11-20 19:09:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6715328467153285) internal successors, (229), 221 states have internal predecessors, (229), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 240 transitions. [2024-11-20 19:09:22,861 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 240 transitions. Word has length 34 [2024-11-20 19:09:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:22,861 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 240 transitions. [2024-11-20 19:09:22,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 240 transitions. [2024-11-20 19:09:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 19:09:22,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:22,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:22,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 19:09:23,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 19:09:23,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_35_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:23,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 75731151, now seen corresponding path program 1 times [2024-11-20 19:09:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997713318] [2024-11-20 19:09:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:23,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139762326] [2024-11-20 19:09:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:23,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:23,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:23,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:09:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:09:23,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:23,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:23,452 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997713318] [2024-11-20 19:09:23,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139762326] [2024-11-20 19:09:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139762326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:23,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703093045] [2024-11-20 19:09:23,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:23,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:23,455 INFO L87 Difference]: Start difference. First operand 229 states and 240 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:23,836 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2024-11-20 19:09:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 35 [2024-11-20 19:09:23,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:23,838 INFO L225 Difference]: With dead ends: 319 [2024-11-20 19:09:23,838 INFO L226 Difference]: Without dead ends: 318 [2024-11-20 19:09:23,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:09:23,839 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 207 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:23,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 687 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-20 19:09:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 229. [2024-11-20 19:09:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6642335766423357) internal successors, (228), 221 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 239 transitions. [2024-11-20 19:09:23,845 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 239 transitions. Word has length 35 [2024-11-20 19:09:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:23,845 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 239 transitions. [2024-11-20 19:09:23,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 239 transitions. [2024-11-20 19:09:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 19:09:23,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:23,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:23,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 19:09:24,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:24,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_35_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:24,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301417, now seen corresponding path program 1 times [2024-11-20 19:09:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311853959] [2024-11-20 19:09:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:24,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311853959] [2024-11-20 19:09:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311853959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391825860] [2024-11-20 19:09:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:24,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:24,223 INFO L87 Difference]: Start difference. First operand 229 states and 239 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:24,302 INFO L93 Difference]: Finished difference Result 316 states and 320 transitions. [2024-11-20 19:09:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-20 19:09:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:24,303 INFO L225 Difference]: With dead ends: 316 [2024-11-20 19:09:24,304 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:09:24,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:24,304 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 167 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:24,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 875 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:09:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 229. [2024-11-20 19:09:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6496350364963503) internal successors, (226), 221 states have internal predecessors, (226), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 237 transitions. [2024-11-20 19:09:24,309 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 237 transitions. Word has length 36 [2024-11-20 19:09:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:24,310 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 237 transitions. [2024-11-20 19:09:24,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 237 transitions. [2024-11-20 19:09:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 19:09:24,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:24,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:24,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 19:09:24,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_35_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:24,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1249085721, now seen corresponding path program 1 times [2024-11-20 19:09:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:24,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077864763] [2024-11-20 19:09:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:24,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077864763] [2024-11-20 19:09:24,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077864763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:24,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:24,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079632353] [2024-11-20 19:09:24,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:24,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:24,599 INFO L87 Difference]: Start difference. First operand 229 states and 237 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:25,194 INFO L93 Difference]: Finished difference Result 314 states and 318 transitions. [2024-11-20 19:09:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-20 19:09:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:25,195 INFO L225 Difference]: With dead ends: 314 [2024-11-20 19:09:25,195 INFO L226 Difference]: Without dead ends: 313 [2024-11-20 19:09:25,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:25,196 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 163 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:25,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 937 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:09:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-20 19:09:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 229. [2024-11-20 19:09:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 221 states have internal predecessors, (225), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 236 transitions. [2024-11-20 19:09:25,211 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 236 transitions. Word has length 38 [2024-11-20 19:09:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:25,211 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 236 transitions. [2024-11-20 19:09:25,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 236 transitions. [2024-11-20 19:09:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 19:09:25,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:25,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:25,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 19:09:25,212 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_35_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:25,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash 66951891, now seen corresponding path program 1 times [2024-11-20 19:09:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202269739] [2024-11-20 19:09:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:25,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202269739] [2024-11-20 19:09:25,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202269739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:25,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:25,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866747208] [2024-11-20 19:09:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:25,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:25,430 INFO L87 Difference]: Start difference. First operand 229 states and 236 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:25,702 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2024-11-20 19:09:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:25,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-20 19:09:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:25,705 INFO L225 Difference]: With dead ends: 313 [2024-11-20 19:09:25,705 INFO L226 Difference]: Without dead ends: 312 [2024-11-20 19:09:25,705 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 [2024-11-20 19:09:25,705 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 160 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:25,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 823 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-20 19:09:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 229. [2024-11-20 19:09:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.635036496350365) internal successors, (224), 221 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 235 transitions. [2024-11-20 19:09:25,714 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 235 transitions. Word has length 39 [2024-11-20 19:09:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:25,714 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 235 transitions. [2024-11-20 19:09:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 235 transitions. [2024-11-20 19:09:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-20 19:09:25,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:25,715 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:25,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 19:09:25,715 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_35_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:25,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2075508827, now seen corresponding path program 1 times [2024-11-20 19:09:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327314576] [2024-11-20 19:09:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327314576] [2024-11-20 19:09:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327314576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:25,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769968596] [2024-11-20 19:09:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:25,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:25,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:25,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:25,885 INFO L87 Difference]: Start difference. First operand 229 states and 235 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,209 INFO L93 Difference]: Finished difference Result 314 states and 319 transitions. [2024-11-20 19:09:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:26,209 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), 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 40 [2024-11-20 19:09:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,210 INFO L225 Difference]: With dead ends: 314 [2024-11-20 19:09:26,211 INFO L226 Difference]: Without dead ends: 313 [2024-11-20 19:09:26,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:26,211 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 138 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 798 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-20 19:09:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 229. [2024-11-20 19:09:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6277372262773722) internal successors, (223), 221 states have internal predecessors, (223), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 234 transitions. [2024-11-20 19:09:26,229 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 234 transitions. Word has length 40 [2024-11-20 19:09:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,230 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 234 transitions. [2024-11-20 19:09:26,230 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 234 transitions. [2024-11-20 19:09:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 19:09:26,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 19:09:26,231 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_35_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:26,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -83735595, now seen corresponding path program 1 times [2024-11-20 19:09:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503061252] [2024-11-20 19:09:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:26,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:26,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503061252] [2024-11-20 19:09:26,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503061252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:26,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:26,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189014310] [2024-11-20 19:09:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:26,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:26,337 INFO L87 Difference]: Start difference. First operand 229 states and 234 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,560 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2024-11-20 19:09:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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 41 [2024-11-20 19:09:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,562 INFO L225 Difference]: With dead ends: 313 [2024-11-20 19:09:26,562 INFO L226 Difference]: Without dead ends: 312 [2024-11-20 19:09:26,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:26,563 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 135 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 706 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-20 19:09:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 229. [2024-11-20 19:09:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 221 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-20 19:09:26,568 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 41 [2024-11-20 19:09:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,568 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-20 19:09:26,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-20 19:09:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 19:09:26,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 19:09:26,569 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_27_to_35_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:26,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1969459027, now seen corresponding path program 1 times [2024-11-20 19:09:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313926711] [2024-11-20 19:09:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-20 19:09:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313926711] [2024-11-20 19:09:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313926711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826113904] [2024-11-20 19:09:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:26,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:26,764 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,857 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-11-20 19:09:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-20 19:09:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,859 INFO L225 Difference]: With dead ends: 312 [2024-11-20 19:09:26,859 INFO L226 Difference]: Without dead ends: 311 [2024-11-20 19:09:26,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:26,859 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 125 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 934 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-20 19:09:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 230. [2024-11-20 19:09:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 138 states have (on average 1.6159420289855073) internal successors, (223), 222 states have internal predecessors, (223), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2024-11-20 19:09:26,865 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 49 [2024-11-20 19:09:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,865 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 234 transitions. [2024-11-20 19:09:26,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 234 transitions. [2024-11-20 19:09:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 19:09:26,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 19:09:26,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_27_to_35_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:26,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash 923687911, now seen corresponding path program 1 times [2024-11-20 19:09:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2312723] [2024-11-20 19:09:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-20 19:09:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2312723] [2024-11-20 19:09:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2312723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937004287] [2024-11-20 19:09:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:27,056 INFO L87 Difference]: Start difference. First operand 230 states and 234 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,118 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-20 19:09:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 50 [2024-11-20 19:09:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,120 INFO L225 Difference]: With dead ends: 230 [2024-11-20 19:09:27,120 INFO L226 Difference]: Without dead ends: 229 [2024-11-20 19:09:27,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:27,121 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 227 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 799 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-20 19:09:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-20 19:09:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 138 states have (on average 1.608695652173913) internal successors, (222), 221 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-11-20 19:09:27,126 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 50 [2024-11-20 19:09:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,127 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-11-20 19:09:27,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-11-20 19:09:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 19:09:27,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 19:09:27,128 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_27_to_35_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:27,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1430445611, now seen corresponding path program 1 times [2024-11-20 19:09:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578272038] [2024-11-20 19:09:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-20 19:09:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578272038] [2024-11-20 19:09:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578272038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666769090] [2024-11-20 19:09:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:27,269 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,385 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2024-11-20 19:09:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-20 19:09:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,387 INFO L225 Difference]: With dead ends: 309 [2024-11-20 19:09:27,388 INFO L226 Difference]: Without dead ends: 307 [2024-11-20 19:09:27,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:27,389 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 121 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 757 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-20 19:09:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 232. [2024-11-20 19:09:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 141 states have (on average 1.5957446808510638) internal successors, (225), 224 states have internal predecessors, (225), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 236 transitions. [2024-11-20 19:09:27,395 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 236 transitions. Word has length 51 [2024-11-20 19:09:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,395 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 236 transitions. [2024-11-20 19:09:27,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 236 transitions. [2024-11-20 19:09:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 19:09:27,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 19:09:27,397 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:27,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1394239704, now seen corresponding path program 1 times [2024-11-20 19:09:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174119066] [2024-11-20 19:09:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 19:09:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 19:09:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174119066] [2024-11-20 19:09:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174119066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355489060] [2024-11-20 19:09:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:27,518 INFO L87 Difference]: Start difference. First operand 232 states and 236 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,717 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2024-11-20 19:09:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-20 19:09:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,718 INFO L225 Difference]: With dead ends: 309 [2024-11-20 19:09:27,718 INFO L226 Difference]: Without dead ends: 299 [2024-11-20 19:09:27,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:27,719 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 196 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 521 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-20 19:09:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 245. [2024-11-20 19:09:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.5490196078431373) internal successors, (237), 235 states have internal predecessors, (237), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2024-11-20 19:09:27,725 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 52 [2024-11-20 19:09:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,725 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2024-11-20 19:09:27,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2024-11-20 19:09:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:09:27,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 19:09:27,745 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_27_to_35_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:27,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash -268690345, now seen corresponding path program 1 times [2024-11-20 19:09:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085546223] [2024-11-20 19:09:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772180881] [2024-11-20 19:09:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:27,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:27,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:09:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:09:27,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:27,847 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 [2024-11-20 19:09:27,960 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 [2024-11-20 19:09:27,963 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 [2024-11-20 19:09:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085546223] [2024-11-20 19:09:27,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772180881] [2024-11-20 19:09:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772180881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321462114] [2024-11-20 19:09:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:27,974 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,211 INFO L93 Difference]: Finished difference Result 301 states and 307 transitions. [2024-11-20 19:09:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-11-20 19:09:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,213 INFO L225 Difference]: With dead ends: 301 [2024-11-20 19:09:28,213 INFO L226 Difference]: Without dead ends: 299 [2024-11-20 19:09:28,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:09:28,213 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 302 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 666 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-20 19:09:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 243. [2024-11-20 19:09:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 153 states have (on average 1.5359477124183007) internal successors, (235), 233 states have internal predecessors, (235), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2024-11-20 19:09:28,220 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 53 [2024-11-20 19:09:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,221 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2024-11-20 19:09:28,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2024-11-20 19:09:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 19:09:28,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:09:28,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 19:09:28,426 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_27_to_35_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:28,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash 260534123, now seen corresponding path program 1 times [2024-11-20 19:09:28,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261198248] [2024-11-20 19:09:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:28,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144885536] [2024-11-20 19:09:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:28,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:28,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:09:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 19:09:28,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:28,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:28,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261198248] [2024-11-20 19:09:28,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144885536] [2024-11-20 19:09:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144885536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:28,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393782317] [2024-11-20 19:09:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:28,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:28,642 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,864 INFO L93 Difference]: Finished difference Result 314 states and 323 transitions. [2024-11-20 19:09:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-20 19:09:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,865 INFO L225 Difference]: With dead ends: 314 [2024-11-20 19:09:28,865 INFO L226 Difference]: Without dead ends: 313 [2024-11-20 19:09:28,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:28,866 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 118 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 954 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-20 19:09:28,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 274. [2024-11-20 19:09:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 182 states have (on average 1.5824175824175823) internal successors, (288), 263 states have internal predecessors, (288), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-11-20 19:09:28,873 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 54 [2024-11-20 19:09:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,873 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-11-20 19:09:28,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-11-20 19:09:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 19:09:28,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,874 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 19:09:29,078 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,SelfDestructingSolverStorable17 [2024-11-20 19:09:29,079 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_27_to_35_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:29,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -513376551, now seen corresponding path program 1 times [2024-11-20 19:09:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:29,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931382184] [2024-11-20 19:09:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272812181] [2024-11-20 19:09:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:29,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:29,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:29,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:09:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:29,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:09:29,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:29,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:29,294 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 [2024-11-20 19:09:29,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-20 19:09:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931382184] [2024-11-20 19:09:29,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272812181] [2024-11-20 19:09:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272812181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654027280] [2024-11-20 19:09:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:29,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:29,324 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:29,520 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2024-11-20 19:09:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:09:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-20 19:09:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:29,522 INFO L225 Difference]: With dead ends: 305 [2024-11-20 19:09:29,522 INFO L226 Difference]: Without dead ends: 304 [2024-11-20 19:09:29,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:09:29,522 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 302 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:29,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 663 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-20 19:09:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 273. [2024-11-20 19:09:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 182 states have (on average 1.5769230769230769) internal successors, (287), 262 states have internal predecessors, (287), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-11-20 19:09:29,529 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 55 [2024-11-20 19:09:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:29,529 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-11-20 19:09:29,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-11-20 19:09:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-20 19:09:29,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:29,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:29,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 19:09:29,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:29,731 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_27_to_35_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:29,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1265196333, now seen corresponding path program 1 times [2024-11-20 19:09:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473947995] [2024-11-20 19:09:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:29,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829574249] [2024-11-20 19:09:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:29,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:29,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:09:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:29,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 19:09:29,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:29,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:29,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473947995] [2024-11-20 19:09:29,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829574249] [2024-11-20 19:09:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829574249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031963855] [2024-11-20 19:09:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:29,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:29,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:29,975 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:30,217 INFO L93 Difference]: Finished difference Result 313 states and 320 transitions. [2024-11-20 19:09:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:30,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-20 19:09:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:30,219 INFO L225 Difference]: With dead ends: 313 [2024-11-20 19:09:30,219 INFO L226 Difference]: Without dead ends: 312 [2024-11-20 19:09:30,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:09:30,220 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 122 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:30,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 986 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-20 19:09:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2024-11-20 19:09:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 184 states have (on average 1.5706521739130435) internal successors, (289), 264 states have internal predecessors, (289), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-11-20 19:09:30,227 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 56 [2024-11-20 19:09:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:30,227 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-11-20 19:09:30,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-11-20 19:09:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 19:09:30,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:30,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:30,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:30,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:30,428 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_27_to_35_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:30,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash 566380891, now seen corresponding path program 1 times [2024-11-20 19:09:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368107004] [2024-11-20 19:09:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510318162] [2024-11-20 19:09:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:30,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:30,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:09:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:30,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:09:30,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:30,597 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 [2024-11-20 19:09:30,732 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 [2024-11-20 19:09:30,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-20 19:09:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:30,791 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:30,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368107004] [2024-11-20 19:09:30,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510318162] [2024-11-20 19:09:30,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510318162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:30,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:30,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 19:09:30,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171145326] [2024-11-20 19:09:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:30,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:09:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:09:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:30,792 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,067 INFO L93 Difference]: Finished difference Result 306 states and 311 transitions. [2024-11-20 19:09:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 19:09:31,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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 57 [2024-11-20 19:09:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,068 INFO L225 Difference]: With dead ends: 306 [2024-11-20 19:09:31,069 INFO L226 Difference]: Without dead ends: 305 [2024-11-20 19:09:31,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:09:31,069 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 290 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:31,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 929 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-20 19:09:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 274. [2024-11-20 19:09:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 184 states have (on average 1.565217391304348) internal successors, (288), 263 states have internal predecessors, (288), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-11-20 19:09:31,078 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 57 [2024-11-20 19:09:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,078 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-11-20 19:09:31,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-11-20 19:09:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-20 19:09:31,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:31,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:31,282 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,SelfDestructingSolverStorable20 [2024-11-20 19:09:31,283 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_27_to_35_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:31,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 377938671, now seen corresponding path program 1 times [2024-11-20 19:09:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400348449] [2024-11-20 19:09:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:31,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017650400] [2024-11-20 19:09:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:31,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:31,304 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) [2024-11-20 19:09:31,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 19:09:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 19:09:31,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:31,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:31,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:31,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400348449] [2024-11-20 19:09:31,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017650400] [2024-11-20 19:09:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017650400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:31,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:31,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 19:09:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384620041] [2024-11-20 19:09:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:09:31,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:09:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:31,548 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,778 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2024-11-20 19:09:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:09:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 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 58 [2024-11-20 19:09:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,781 INFO L225 Difference]: With dead ends: 312 [2024-11-20 19:09:31,781 INFO L226 Difference]: Without dead ends: 311 [2024-11-20 19:09:31,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:09:31,782 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 122 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:31,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 963 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-20 19:09:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 276. [2024-11-20 19:09:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 186 states have (on average 1.5591397849462365) internal successors, (290), 265 states have internal predecessors, (290), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2024-11-20 19:09:31,788 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 58 [2024-11-20 19:09:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,789 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2024-11-20 19:09:31,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2024-11-20 19:09:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 19:09:31,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:31,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 19:09:31,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:31,990 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_27_to_35_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-11-20 19:09:31,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1168802851, now seen corresponding path program 1 times [2024-11-20 19:09:31,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823782309] [2024-11-20 19:09:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat