./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 21:18:26,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:18:26,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:18:26,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:18:26,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:18:26,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:18:26,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:18:26,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:18:26,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:18:26,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:18:26,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:18:26,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:18:26,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:18:26,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:18:26,772 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:18:26,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:18:26,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:18:26,773 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:18:26,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:18:26,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:18:26,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:18:26,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:18:26,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:18:26,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:18:26,776 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:18:26,776 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:18:26,777 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:18:26,777 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:18:26,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:18:26,777 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:18:26,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:18:26,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:26,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:18:26,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:18:26,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:18:26,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:18:26,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:18:26,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:18:26,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:18:26,780 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe [2024-10-11 21:18:26,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:18:26,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:18:26,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:18:26,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:18:26,999 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:18:27,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-10-11 21:18:28,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:18:28,453 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:18:28,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-10-11 21:18:28,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/73f16c974/8eae3cd7cf5c46028f6562ab1d6ba8ab/FLAGac4622918 [2024-10-11 21:18:28,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/73f16c974/8eae3cd7cf5c46028f6562ab1d6ba8ab [2024-10-11 21:18:28,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:18:28,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:18:28,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:28,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:18:28,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:18:28,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:28" (1/1) ... [2024-10-11 21:18:28,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f74ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:28, skipping insertion in model container [2024-10-11 21:18:28,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:28" (1/1) ... [2024-10-11 21:18:28,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:18:29,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:29,091 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:18:29,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:29,136 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:18:29,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29 WrapperNode [2024-10-11 21:18:29,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:29,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:29,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:18:29,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:18:29,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,174 INFO L138 Inliner]: procedures = 16, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-10-11 21:18:29,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:29,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:18:29,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:18:29,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:18:29,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,205 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, 1, 2, 2, 2]. [2024-10-11 21:18:29,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:18:29,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:18:29,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:18:29,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:18:29,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (1/1) ... [2024-10-11 21:18:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:29,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:29,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:18:29,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:18:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:18:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:18:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:18:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:18:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:18:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:18:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:18:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:18:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:18:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:18:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:18:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:18:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:18:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:18:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:18:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-10-11 21:18:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-10-11 21:18:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:18:29,403 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:18:29,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:18:30,628 INFO L? ?]: Removed 370 outVars from TransFormulas that were not future-live. [2024-10-11 21:18:30,628 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:18:30,664 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:18:30,665 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 21:18:30,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:30 BoogieIcfgContainer [2024-10-11 21:18:30,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:18:30,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:18:30,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:18:30,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:18:30,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:18:28" (1/3) ... [2024-10-11 21:18:30,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa640f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:30, skipping insertion in model container [2024-10-11 21:18:30,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:29" (2/3) ... [2024-10-11 21:18:30,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa640f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:30, skipping insertion in model container [2024-10-11 21:18:30,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:30" (3/3) ... [2024-10-11 21:18:30,672 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5-ll.c [2024-10-11 21:18:30,687 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:18:30,687 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-10-11 21:18:30,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:18:30,751 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;@6774c8fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:18:30,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-10-11 21:18:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 183 states have internal predecessors, (186), 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) [2024-10-11 21:18:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:18:30,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:30,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:30,761 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)] === [2024-10-11 21:18:30,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -274385286, now seen corresponding path program 1 times [2024-10-11 21:18:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111066040] [2024-10-11 21:18:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:30,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:30,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:30,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111066040] [2024-10-11 21:18:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111066040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:30,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 21:18:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217336012] [2024-10-11 21:18:30,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:30,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 21:18:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 21:18:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 21:18:30,980 INFO L87 Difference]: Start difference. First operand has 190 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 183 states have internal predecessors, (186), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:31,064 INFO L93 Difference]: Finished difference Result 378 states and 394 transitions. [2024-10-11 21:18:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 21:18:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 21:18:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:31,072 INFO L225 Difference]: With dead ends: 378 [2024-10-11 21:18:31,072 INFO L226 Difference]: Without dead ends: 187 [2024-10-11 21:18:31,076 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 [2024-10-11 21:18:31,078 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:31,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:18:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-11 21:18:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-10-11 21:18:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 97 states have (on average 1.865979381443299) internal successors, (181), 181 states have internal predecessors, (181), 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) [2024-10-11 21:18:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2024-10-11 21:18:31,121 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 7 [2024-10-11 21:18:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:31,121 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2024-10-11 21:18:31,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2024-10-11 21:18:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:18:31,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:31,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:31,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:18:31,123 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)] === [2024-10-11 21:18:31,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -217126984, now seen corresponding path program 1 times [2024-10-11 21:18:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:31,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322005756] [2024-10-11 21:18:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:31,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:31,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322005756] [2024-10-11 21:18:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322005756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:31,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:31,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281031435] [2024-10-11 21:18:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:31,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:31,352 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:31,933 INFO L93 Difference]: Finished difference Result 345 states and 350 transitions. [2024-10-11 21:18:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 21:18:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:31,935 INFO L225 Difference]: With dead ends: 345 [2024-10-11 21:18:31,935 INFO L226 Difference]: Without dead ends: 335 [2024-10-11 21:18:31,935 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 [2024-10-11 21:18:31,936 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 264 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:31,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 695 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-10-11 21:18:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 228. [2024-10-11 21:18:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.8014705882352942) internal successors, (245), 220 states have internal predecessors, (245), 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) [2024-10-11 21:18:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 256 transitions. [2024-10-11 21:18:31,949 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 256 transitions. Word has length 7 [2024-10-11 21:18:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:31,950 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 256 transitions. [2024-10-11 21:18:31,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 256 transitions. [2024-10-11 21:18:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 21:18:31,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:31,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:31,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:18:31,951 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)] === [2024-10-11 21:18:31,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1825196994, now seen corresponding path program 1 times [2024-10-11 21:18:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924528846] [2024-10-11 21:18:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924528846] [2024-10-11 21:18:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924528846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:32,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917503715] [2024-10-11 21:18:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:32,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:32,137 INFO L87 Difference]: Start difference. First operand 228 states and 256 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-11 21:18:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:32,403 INFO L93 Difference]: Finished difference Result 335 states and 340 transitions. [2024-10-11 21:18:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 17 [2024-10-11 21:18:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:32,406 INFO L225 Difference]: With dead ends: 335 [2024-10-11 21:18:32,406 INFO L226 Difference]: Without dead ends: 327 [2024-10-11 21:18:32,408 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 [2024-10-11 21:18:32,410 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 220 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:32,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 694 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-11 21:18:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 228. [2024-10-11 21:18:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 220 states have internal predecessors, (237), 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) [2024-10-11 21:18:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 248 transitions. [2024-10-11 21:18:32,434 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 248 transitions. Word has length 17 [2024-10-11 21:18:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:32,435 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 248 transitions. [2024-10-11 21:18:32,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-11 21:18:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 248 transitions. [2024-10-11 21:18:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 21:18:32,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:32,436 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:32,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:18:32,436 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)] === [2024-10-11 21:18:32,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1829841866, now seen corresponding path program 1 times [2024-10-11 21:18:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259642475] [2024-10-11 21:18:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:32,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824783151] [2024-10-11 21:18:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:32,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:32,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:32,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:18:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:32,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:18:32,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:32,595 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 [2024-10-11 21:18:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:32,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259642475] [2024-10-11 21:18:32,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824783151] [2024-10-11 21:18:32,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824783151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:32,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:32,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85479562] [2024-10-11 21:18:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:32,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:32,727 INFO L87 Difference]: Start difference. First operand 228 states and 248 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-10-11 21:18:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:33,311 INFO L93 Difference]: Finished difference Result 327 states and 332 transitions. [2024-10-11 21:18:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 25 [2024-10-11 21:18:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:33,313 INFO L225 Difference]: With dead ends: 327 [2024-10-11 21:18:33,313 INFO L226 Difference]: Without dead ends: 325 [2024-10-11 21:18:33,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:33,315 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 237 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:33,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 687 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-11 21:18:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 228. [2024-10-11 21:18:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.7279411764705883) internal successors, (235), 220 states have internal predecessors, (235), 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) [2024-10-11 21:18:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2024-10-11 21:18:33,335 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 25 [2024-10-11 21:18:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:33,336 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2024-10-11 21:18:33,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-10-11 21:18:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2024-10-11 21:18:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 21:18:33,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:33,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:33,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:18:33,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:33,544 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)] === [2024-10-11 21:18:33,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1836414924, now seen corresponding path program 1 times [2024-10-11 21:18:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702121432] [2024-10-11 21:18:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702121432] [2024-10-11 21:18:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702121432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:33,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156760002] [2024-10-11 21:18:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:33,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:33,700 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-10-11 21:18:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:34,010 INFO L93 Difference]: Finished difference Result 325 states and 330 transitions. [2024-10-11 21:18:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 27 [2024-10-11 21:18:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:34,012 INFO L225 Difference]: With dead ends: 325 [2024-10-11 21:18:34,012 INFO L226 Difference]: Without dead ends: 319 [2024-10-11 21:18:34,013 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 [2024-10-11 21:18:34,013 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 178 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:34,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 706 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-11 21:18:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 228. [2024-10-11 21:18:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6838235294117647) internal successors, (229), 220 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) [2024-10-11 21:18:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 240 transitions. [2024-10-11 21:18:34,021 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 240 transitions. Word has length 27 [2024-10-11 21:18:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:34,021 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 240 transitions. [2024-10-11 21:18:34,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-10-11 21:18:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 240 transitions. [2024-10-11 21:18:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 21:18:34,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:34,024 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] [2024-10-11 21:18:34,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 21:18:34,025 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)] === [2024-10-11 21:18:34,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 860392402, now seen corresponding path program 1 times [2024-10-11 21:18:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474241046] [2024-10-11 21:18:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:34,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114037542] [2024-10-11 21:18:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:34,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:34,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:34,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:34,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:18:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:34,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 21:18:34,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:34,141 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 [2024-10-11 21:18:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:34,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474241046] [2024-10-11 21:18:34,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114037542] [2024-10-11 21:18:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114037542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:34,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:34,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 21:18:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071565939] [2024-10-11 21:18:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:34,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:18:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:18:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:18:34,379 INFO L87 Difference]: Start difference. First operand 228 states and 240 transitions. Second operand has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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) [2024-10-11 21:18:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:34,959 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2024-10-11 21:18:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:18:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 33 [2024-10-11 21:18:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:34,960 INFO L225 Difference]: With dead ends: 319 [2024-10-11 21:18:34,960 INFO L226 Difference]: Without dead ends: 317 [2024-10-11 21:18:34,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-10-11 21:18:34,962 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 190 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:34,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 804 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-11 21:18:34,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 228. [2024-10-11 21:18:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6691176470588236) internal successors, (227), 220 states have internal predecessors, (227), 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) [2024-10-11 21:18:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 238 transitions. [2024-10-11 21:18:34,969 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 238 transitions. Word has length 33 [2024-10-11 21:18:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:34,969 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 238 transitions. [2024-10-11 21:18:34,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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) [2024-10-11 21:18:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 238 transitions. [2024-10-11 21:18:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:18:34,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:34,970 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] [2024-10-11 21:18:34,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 21:18:35,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:35,175 INFO L396 AbstractCegarLoop]: === Iteration 7 === 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)] === [2024-10-11 21:18:35,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2091583532, now seen corresponding path program 1 times [2024-10-11 21:18:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531953489] [2024-10-11 21:18:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:35,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531953489] [2024-10-11 21:18:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531953489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:35,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:35,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718522634] [2024-10-11 21:18:35,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:35,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:35,323 INFO L87 Difference]: Start difference. First operand 228 states and 238 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 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) [2024-10-11 21:18:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:35,410 INFO L93 Difference]: Finished difference Result 315 states and 319 transitions. [2024-10-11 21:18:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:35,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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 [2024-10-11 21:18:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:35,411 INFO L225 Difference]: With dead ends: 315 [2024-10-11 21:18:35,411 INFO L226 Difference]: Without dead ends: 313 [2024-10-11 21:18:35,411 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 [2024-10-11 21:18:35,412 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 167 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:35,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 866 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-11 21:18:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 228. [2024-10-11 21:18:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6544117647058822) internal successors, (225), 220 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) [2024-10-11 21:18:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 236 transitions. [2024-10-11 21:18:35,419 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 236 transitions. Word has length 35 [2024-10-11 21:18:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:35,420 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 236 transitions. [2024-10-11 21:18:35,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-10-11 21:18:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 236 transitions. [2024-10-11 21:18:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:18:35,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:35,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:35,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:18:35,423 INFO L396 AbstractCegarLoop]: === Iteration 8 === 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)] === [2024-10-11 21:18:35,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 32926678, now seen corresponding path program 1 times [2024-10-11 21:18:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178342736] [2024-10-11 21:18:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178342736] [2024-10-11 21:18:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178342736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811512976] [2024-10-11 21:18:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:35,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:35,746 INFO L87 Difference]: Start difference. First operand 228 states and 236 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:38,705 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2024-10-11 21:18:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:38,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 21:18:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:38,707 INFO L225 Difference]: With dead ends: 313 [2024-10-11 21:18:38,707 INFO L226 Difference]: Without dead ends: 312 [2024-10-11 21:18:38,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:38,707 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 163 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:38,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 926 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-11 21:18:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-11 21:18:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 228. [2024-10-11 21:18:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6470588235294117) internal successors, (224), 220 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) [2024-10-11 21:18:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 235 transitions. [2024-10-11 21:18:38,716 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 235 transitions. Word has length 37 [2024-10-11 21:18:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:38,717 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 235 transitions. [2024-10-11 21:18:38,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 235 transitions. [2024-10-11 21:18:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 21:18:38,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:38,718 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] [2024-10-11 21:18:38,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 21:18:38,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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)] === [2024-10-11 21:18:38,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1020727222, now seen corresponding path program 1 times [2024-10-11 21:18:38,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577539912] [2024-10-11 21:18:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577539912] [2024-10-11 21:18:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577539912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:38,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493533545] [2024-10-11 21:18:38,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:38,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:38,893 INFO L87 Difference]: Start difference. First operand 228 states and 235 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2024-10-11 21:18:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:40,306 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2024-10-11 21:18:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 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 [2024-10-11 21:18:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:40,308 INFO L225 Difference]: With dead ends: 312 [2024-10-11 21:18:40,308 INFO L226 Difference]: Without dead ends: 311 [2024-10-11 21:18:40,308 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 [2024-10-11 21:18:40,308 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 160 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:40,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 814 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 21:18:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-11 21:18:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 228. [2024-10-11 21:18:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6397058823529411) internal successors, (223), 220 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) [2024-10-11 21:18:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 234 transitions. [2024-10-11 21:18:40,319 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 234 transitions. Word has length 38 [2024-10-11 21:18:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:40,320 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 234 transitions. [2024-10-11 21:18:40,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2024-10-11 21:18:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 234 transitions. [2024-10-11 21:18:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 21:18:40,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:40,321 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] [2024-10-11 21:18:40,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 21:18:40,321 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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)] === [2024-10-11 21:18:40,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1577773016, now seen corresponding path program 1 times [2024-10-11 21:18:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385566191] [2024-10-11 21:18:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385566191] [2024-10-11 21:18:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385566191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:40,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:40,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847471617] [2024-10-11 21:18:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:40,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:40,538 INFO L87 Difference]: Start difference. First operand 228 states and 234 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 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) [2024-10-11 21:18:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:41,585 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2024-10-11 21:18:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 [2024-10-11 21:18:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:41,587 INFO L225 Difference]: With dead ends: 313 [2024-10-11 21:18:41,587 INFO L226 Difference]: Without dead ends: 312 [2024-10-11 21:18:41,587 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 [2024-10-11 21:18:41,587 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 138 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:41,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 787 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 21:18:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-11 21:18:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 228. [2024-10-11 21:18:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.6323529411764706) internal successors, (222), 220 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) [2024-10-11 21:18:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 233 transitions. [2024-10-11 21:18:41,593 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 233 transitions. Word has length 39 [2024-10-11 21:18:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:41,593 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 233 transitions. [2024-10-11 21:18:41,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-10-11 21:18:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 233 transitions. [2024-10-11 21:18:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 21:18:41,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:41,594 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] [2024-10-11 21:18:41,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 21:18:41,594 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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)] === [2024-10-11 21:18:41,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1666323448, now seen corresponding path program 1 times [2024-10-11 21:18:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:41,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500471333] [2024-10-11 21:18:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:41,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:41,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:41,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500471333] [2024-10-11 21:18:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500471333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731165650] [2024-10-11 21:18:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:41,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:41,720 INFO L87 Difference]: Start difference. First operand 228 states and 233 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2024-10-11 21:18:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:42,489 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2024-10-11 21:18:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 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 [2024-10-11 21:18:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:42,490 INFO L225 Difference]: With dead ends: 312 [2024-10-11 21:18:42,490 INFO L226 Difference]: Without dead ends: 311 [2024-10-11 21:18:42,490 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 [2024-10-11 21:18:42,491 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 135 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:42,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 697 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 21:18:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-11 21:18:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 228. [2024-10-11 21:18:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.625) internal successors, (221), 220 states have internal predecessors, (221), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-10-11 21:18:42,496 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 40 [2024-10-11 21:18:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:42,496 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-10-11 21:18:42,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2024-10-11 21:18:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-10-11 21:18:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 21:18:42,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:42,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:42,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 21:18:42,497 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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)] === [2024-10-11 21:18:42,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:42,498 INFO L85 PathProgramCache]: Analyzing trace with hash -624524170, now seen corresponding path program 1 times [2024-10-11 21:18:42,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:42,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107344954] [2024-10-11 21:18:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:18:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:42,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:42,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107344954] [2024-10-11 21:18:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107344954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:42,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830537964] [2024-10-11 21:18:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:42,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:42,639 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:42,707 INFO L93 Difference]: Finished difference Result 311 states and 315 transitions. [2024-10-11 21:18:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-10-11 21:18:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:42,708 INFO L225 Difference]: With dead ends: 311 [2024-10-11 21:18:42,708 INFO L226 Difference]: Without dead ends: 310 [2024-10-11 21:18:42,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:42,709 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 125 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:42,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 925 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:18:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-11 21:18:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 229. [2024-10-11 21:18:42,715 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) [2024-10-11 21:18:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-10-11 21:18:42,716 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 48 [2024-10-11 21:18:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:42,717 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-10-11 21:18:42,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-10-11 21:18:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 21:18:42,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:42,719 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] [2024-10-11 21:18:42,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 21:18:42,719 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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)] === [2024-10-11 21:18:42,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2114587428, now seen corresponding path program 1 times [2024-10-11 21:18:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:42,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853839197] [2024-10-11 21:18:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:18:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853839197] [2024-10-11 21:18:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853839197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371656543] [2024-10-11 21:18:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:42,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:42,902 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) 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) [2024-10-11 21:18:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:42,980 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-10-11 21:18:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:42,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) 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 [2024-10-11 21:18:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:42,983 INFO L225 Difference]: With dead ends: 229 [2024-10-11 21:18:42,983 INFO L226 Difference]: Without dead ends: 228 [2024-10-11 21:18:42,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:42,984 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 227 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:42,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 790 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:18:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-11 21:18:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-10-11 21:18:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 220 states have internal predecessors, (221), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-10-11 21:18:42,992 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 49 [2024-10-11 21:18:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:42,992 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-10-11 21:18:42,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) 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) [2024-10-11 21:18:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-10-11 21:18:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 21:18:42,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:42,994 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] [2024-10-11 21:18:42,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 21:18:42,994 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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)] === [2024-10-11 21:18:42,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:42,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1127701048, now seen corresponding path program 1 times [2024-10-11 21:18:42,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:42,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482659715] [2024-10-11 21:18:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:43,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:18:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482659715] [2024-10-11 21:18:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482659715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911379159] [2024-10-11 21:18:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:43,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:43,156 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 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) [2024-10-11 21:18:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:43,292 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-10-11 21:18:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 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 [2024-10-11 21:18:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:43,294 INFO L225 Difference]: With dead ends: 308 [2024-10-11 21:18:43,294 INFO L226 Difference]: Without dead ends: 306 [2024-10-11 21:18:43,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:43,295 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 121 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:43,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 748 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-11 21:18:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 231. [2024-10-11 21:18:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 140 states have (on average 1.6) internal successors, (224), 223 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2024-10-11 21:18:43,301 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 50 [2024-10-11 21:18:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:43,301 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2024-10-11 21:18:43,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 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) [2024-10-11 21:18:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2024-10-11 21:18:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 21:18:43,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:43,301 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] [2024-10-11 21:18:43,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 21:18:43,301 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2024-10-11 21:18:43,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash 598895397, now seen corresponding path program 1 times [2024-10-11 21:18:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189873269] [2024-10-11 21:18:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:43,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-11 21:18:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:43,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:18:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189873269] [2024-10-11 21:18:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189873269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:43,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567036863] [2024-10-11 21:18:43,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:43,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:43,433 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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) [2024-10-11 21:18:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:44,040 INFO L93 Difference]: Finished difference Result 308 states and 313 transitions. [2024-10-11 21:18:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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 51 [2024-10-11 21:18:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:44,041 INFO L225 Difference]: With dead ends: 308 [2024-10-11 21:18:44,041 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 21:18:44,042 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 [2024-10-11 21:18:44,042 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 196 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:44,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 513 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:18:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 21:18:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 244. [2024-10-11 21:18:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.5526315789473684) internal successors, (236), 234 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 21:18:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2024-10-11 21:18:44,048 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 51 [2024-10-11 21:18:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:44,058 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2024-10-11 21:18:44,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (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) [2024-10-11 21:18:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2024-10-11 21:18:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 21:18:44,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:44,059 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] [2024-10-11 21:18:44,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 21:18:44,060 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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)] === [2024-10-11 21:18:44,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1388955642, now seen corresponding path program 1 times [2024-10-11 21:18:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289172840] [2024-10-11 21:18:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:44,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998162084] [2024-10-11 21:18:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:44,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:44,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:44,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:44,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:18:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:44,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:18:44,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:44,167 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 [2024-10-11 21:18:44,278 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 [2024-10-11 21:18:44,280 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 [2024-10-11 21:18:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:44,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:44,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:44,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289172840] [2024-10-11 21:18:44,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:44,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998162084] [2024-10-11 21:18:44,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998162084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:44,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:18:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039328225] [2024-10-11 21:18:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:44,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:44,292 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:48,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:18:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:48,506 INFO L93 Difference]: Finished difference Result 300 states and 306 transitions. [2024-10-11 21:18:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:18:48,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-10-11 21:18:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:48,507 INFO L225 Difference]: With dead ends: 300 [2024-10-11 21:18:48,507 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 21:18:48,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:18:48,508 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 301 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:48,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 656 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-10-11 21:18:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 21:18:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 242. [2024-10-11 21:18:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 152 states have (on average 1.5394736842105263) internal successors, (234), 232 states have internal predecessors, (234), 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) [2024-10-11 21:18:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2024-10-11 21:18:48,517 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 52 [2024-10-11 21:18:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:48,518 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2024-10-11 21:18:48,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2024-10-11 21:18:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 21:18:48,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:48,518 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] [2024-10-11 21:18:48,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 21:18:48,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:48,722 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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)] === [2024-10-11 21:18:48,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 107952168, now seen corresponding path program 1 times [2024-10-11 21:18:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118708418] [2024-10-11 21:18:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:48,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055824239] [2024-10-11 21:18:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:48,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:48,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:48,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:48,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:18:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:48,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 21:18:48,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:48,840 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 [2024-10-11 21:18:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:48,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118708418] [2024-10-11 21:18:48,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055824239] [2024-10-11 21:18:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055824239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:18:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235309139] [2024-10-11 21:18:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:48,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:48,956 INFO L87 Difference]: Start difference. First operand 242 states and 246 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) [2024-10-11 21:18:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:49,253 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2024-10-11 21:18:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:49,254 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 [2024-10-11 21:18:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:49,255 INFO L225 Difference]: With dead ends: 313 [2024-10-11 21:18:49,255 INFO L226 Difference]: Without dead ends: 312 [2024-10-11 21:18:49,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:49,255 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 184 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:49,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 635 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-11 21:18:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 273. [2024-10-11 21:18:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.5856353591160222) 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) [2024-10-11 21:18:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-10-11 21:18:49,264 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 53 [2024-10-11 21:18:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:49,264 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-10-11 21:18:49,264 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) [2024-10-11 21:18:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-10-11 21:18:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 21:18:49,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:49,265 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] [2024-10-11 21:18:49,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:18:49,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 21:18:49,466 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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)] === [2024-10-11 21:18:49,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:49,466 INFO L85 PathProgramCache]: Analyzing trace with hash -948449860, now seen corresponding path program 1 times [2024-10-11 21:18:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082843996] [2024-10-11 21:18:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:49,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:49,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688803002] [2024-10-11 21:18:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:49,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:49,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:49,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:49,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:18:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:49,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 21:18:49,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:49,596 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 [2024-10-11 21:18:49,689 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 [2024-10-11 21:18:49,710 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 [2024-10-11 21:18:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:49,723 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082843996] [2024-10-11 21:18:49,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688803002] [2024-10-11 21:18:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688803002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 21:18:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381780901] [2024-10-11 21:18:49,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:49,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:18:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:18:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:18:49,724 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:53,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:18:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:54,008 INFO L93 Difference]: Finished difference Result 304 states and 309 transitions. [2024-10-11 21:18:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:18:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-10-11 21:18:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:54,010 INFO L225 Difference]: With dead ends: 304 [2024-10-11 21:18:54,010 INFO L226 Difference]: Without dead ends: 303 [2024-10-11 21:18:54,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:18:54,011 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 412 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:54,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 779 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-10-11 21:18:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-10-11 21:18:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 272. [2024-10-11 21:18:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 181 states have (on average 1.580110497237569) internal successors, (286), 261 states have internal predecessors, (286), 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) [2024-10-11 21:18:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2024-10-11 21:18:54,019 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 54 [2024-10-11 21:18:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:54,019 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2024-10-11 21:18:54,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2024-10-11 21:18:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:18:54,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:54,020 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] [2024-10-11 21:18:54,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:18:54,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 21:18:54,225 INFO L396 AbstractCegarLoop]: === Iteration 19 === 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)] === [2024-10-11 21:18:54,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:54,225 INFO L85 PathProgramCache]: Analyzing trace with hash 662825642, now seen corresponding path program 1 times [2024-10-11 21:18:54,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:54,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871279324] [2024-10-11 21:18:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:54,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778523986] [2024-10-11 21:18:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:54,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:54,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:18:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:54,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 21:18:54,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:54,342 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 [2024-10-11 21:18:54,440 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 [2024-10-11 21:18:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:54,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871279324] [2024-10-11 21:18:54,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778523986] [2024-10-11 21:18:54,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778523986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:54,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:54,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 21:18:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240722197] [2024-10-11 21:18:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:54,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:18:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:18:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:18:54,483 INFO L87 Difference]: Start difference. First operand 272 states and 300 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) [2024-10-11 21:18:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:54,845 INFO L93 Difference]: Finished difference Result 312 states and 319 transitions. [2024-10-11 21:18:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:18:54,846 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 [2024-10-11 21:18:54,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:54,847 INFO L225 Difference]: With dead ends: 312 [2024-10-11 21:18:54,847 INFO L226 Difference]: Without dead ends: 311 [2024-10-11 21:18:54,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:54,847 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 122 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:54,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1078 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-11 21:18:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 274. [2024-10-11 21:18:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 183 states have (on average 1.5737704918032787) 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) [2024-10-11 21:18:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2024-10-11 21:18:54,867 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 55 [2024-10-11 21:18:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:54,868 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2024-10-11 21:18:54,868 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) [2024-10-11 21:18:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2024-10-11 21:18:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:18:54,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:54,868 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] [2024-10-11 21:18:54,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:18:55,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:55,069 INFO L396 AbstractCegarLoop]: === Iteration 20 === 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)] === [2024-10-11 21:18:55,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:55,069 INFO L85 PathProgramCache]: Analyzing trace with hash -927241346, now seen corresponding path program 1 times [2024-10-11 21:18:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551777603] [2024-10-11 21:18:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031190983] [2024-10-11 21:18:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:55,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:55,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:55,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:18:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:55,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 21:18:55,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:55,189 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 [2024-10-11 21:18:55,287 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 [2024-10-11 21:18:55,338 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 [2024-10-11 21:18:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:55,355 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551777603] [2024-10-11 21:18:55,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031190983] [2024-10-11 21:18:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031190983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 21:18:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222664661] [2024-10-11 21:18:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 21:18:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 21:18:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:55,357 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:59,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:18:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:59,612 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2024-10-11 21:18:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 21:18:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-10-11 21:18:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:59,614 INFO L225 Difference]: With dead ends: 305 [2024-10-11 21:18:59,614 INFO L226 Difference]: Without dead ends: 304 [2024-10-11 21:18:59,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:18:59,614 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 298 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:59,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 718 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-10-11 21:18:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-11 21:18:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 273. [2024-10-11 21:18:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 183 states have (on average 1.5683060109289617) 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) [2024-10-11 21:18:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-10-11 21:18:59,631 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 56 [2024-10-11 21:18:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:59,631 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-10-11 21:18:59,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-10-11 21:18:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 21:18:59,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:59,631 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] [2024-10-11 21:18:59,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 21:18:59,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:59,832 INFO L396 AbstractCegarLoop]: === Iteration 21 === 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)] === [2024-10-11 21:18:59,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1320289580, now seen corresponding path program 1 times [2024-10-11 21:18:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316848969] [2024-10-11 21:18:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909068416] [2024-10-11 21:18:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:59,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:59,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:59,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:18:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:59,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 21:18:59,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:59,954 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 [2024-10-11 21:19:00,061 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 [2024-10-11 21:19:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:00,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316848969] [2024-10-11 21:19:00,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909068416] [2024-10-11 21:19:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909068416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 21:19:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338619404] [2024-10-11 21:19:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:00,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 21:19:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 21:19:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:00,117 INFO L87 Difference]: Start difference. First operand 273 states and 301 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) [2024-10-11 21:19:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:00,536 INFO L93 Difference]: Finished difference Result 311 states and 316 transitions. [2024-10-11 21:19:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:19:00,536 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 [2024-10-11 21:19:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:00,537 INFO L225 Difference]: With dead ends: 311 [2024-10-11 21:19:00,537 INFO L226 Difference]: Without dead ends: 310 [2024-10-11 21:19:00,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:19:00,538 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 186 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:00,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 902 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-11 21:19:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 275. [2024-10-11 21:19:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 185 states have (on average 1.5621621621621622) 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) [2024-10-11 21:19:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2024-10-11 21:19:00,545 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 57 [2024-10-11 21:19:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:00,545 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2024-10-11 21:19:00,546 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) [2024-10-11 21:19:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2024-10-11 21:19:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 21:19:00,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:00,546 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] [2024-10-11 21:19:00,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 21:19:00,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 21:19:00,749 INFO L396 AbstractCegarLoop]: === Iteration 22 === 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)] === [2024-10-11 21:19:00,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2020695744, now seen corresponding path program 1 times [2024-10-11 21:19:00,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:00,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039859762] [2024-10-11 21:19:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:00,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat